Exponents And Powers, Popular Questions: ICSE Class 8 MATHS, Mathematics

Aarzoo Chaudhary & 1 other asked a question

Subject: Maths, asked on on 31/10/17

Kindly Answer No.7
Q.7. Aryman invested Rs. 10000 in a company. He would be paid interest at 7 % per annum compounded annually. Find
(i) the amount received by him at the end of 2 years.
(ii) the interest for the 3rd year.

Chinmayee Nayak asked a question

Subject: Maths, asked on on 9/4/18

Sugar factory has annual sales of 3 billion 720 million kilograms of sugar. Express in standard form

Kumar Kshitiz asked a question

Subject: Maths, asked on on 29/5/19

Please solve this

Q3. Find the least number that must be added to 9598 to make it a perfect square. Find the square root of 683.95 correct to 2 places of decimal.

Dharmraj Dubey asked a question

Subject: Maths, asked on on 15/9/17

Find the difference between the simple interest and compound interest on Rs.4800 for 2year at 5% per annum,compound interest being reckoned annually.

Ashish asked a question

Subject: Maths, asked on on 5/4/18

[5^2(n+6) ?(25)^(2n - 7)] ? (125)^2n
Pls solve it

Dhruvi Singhal asked a question

Subject: Maths, asked on on 16/9/19

A steno- typist deposits rupees 10,000 in a bank for a prior of 3 years at 12% per annum compound interest . The interest accrued to her maturity will be

Soham asked a question

Subject: Maths, asked on on 19/5/18

Using dots, draw a square of side 7 dots , and hence write 7(square) as sum of two triangular numbers.

Prashu asked a question

Subject: Maths, asked on on 8/3/18

After spending.85%of the.money he had with.him,Mr Sharma had Rs 810 left with him.What was the amount that he had originally?

Bhakti Dhongade asked a question

Subject: Maths, asked on on 22/3/18

Simplify:- [a⁷⁺²ⁿ * (a²)³ⁿ⁺² ] / [(a⁴]²ⁿ⁺³]

Krish Thakkar asked a question

Subject: Maths, asked on on 22/7/18

Find the least number that must be added to 6412 to make it a perfect square?

Atreya asked a question

Subject: Maths, asked on on 26/8/17

a^5b^2/a^2b^3

Harshit Sachin Kadam asked a question

Subject: Maths, asked on on 5/7/20

find the value of
2 raised to -4

Monika Garg asked a question

Subject: Maths, asked on on 17/5/18

9 .1 and 3 pls solve this problem

Soham asked a question

Subject: Maths, asked on on 19/5/18

Categorise the following numbers according to whether their squares are even or odd. 1) 761, 2)1007 , 3) 4444 , 4) 4368 , 5)2893

Devansh Anand asked a question

Subject: Maths, asked on on 22/6/20

7 to the power x-1 is equal to 1

Bineeta Negi asked a question

Subject: Maths, asked on on 8/4/18

Q. Find value of x
(iii)

4^{x} + 4^{x} + 4^{x} = 192

Diksha asked a question

Subject: Maths, asked on on 7/4/18

Solve this: (ii)

2^{5 x - 1} = 2^{3 x + 1}

Mohamed Rashad asked a question

Subject: Maths, asked on on 11/9/17

10th sum please
Q.10)

\sqrt[3]{- 2 \frac{82}{1331}}

Alam asked a question

Subject: Maths, asked on on 14/7/18

2 x ki power 3 is equal to 8 x the power 4 + 2 solve

Soham asked a question

Subject: Maths, asked on on 19/5/18

Without finding the squares , find the units digit in the squares of the following numbers: 1) 352 , 2) 9377 , 3) 285 , 4) 4626 , 5) 999

Chinmaya Kumar Sahoo asked a question

Subject: Maths, asked on on 27/12/17

Q.28 A cask P is filled with 50 litre of water , and a cask Q wit 40 litres of acid x litres drawn from each cask mixed and reeplaced and the same operation is repeated . Find x when there are 8 7/8 litre of acid in Pafter the second replacement

Kavyansh Verma asked a question

Subject: Maths, asked on on 19/8/22

Santosh purchased a wrist watch at 20% discount on its marked price and sold it at the marked price. Find the profit percent of Santosh on this transaction.

Soham asked a question

Subject: Maths, asked on on 5/5/18

A man bought a certain number of oranges; out of which 13 percent were found rotten. He gave 75% of the remaining in charity and still has 522 oranges left. Find how many had he bought?

Dharmraj Dubey asked a question

Subject: Maths, asked on on 6/9/17

What sum of money will Rs. 170.10 as simple interest in 2 year 3 months at 6% per annum?

Sushil asked a question

Subject: Maths, asked on on 24/7/18

A>c show that abc-cba=99(a-c)

.... asked a question

Subject: Maths, asked on on 12/8/18

Plz solve 1(7)

Dharmraj Dubey asked a question

Subject: Maths, asked on on 17/9/17

Kindly answer no. 5

5. Find the sum of money when.
(i) simple interest at

7 \frac{1}{4} % p . a . for 2 \frac{1}{2} years is Rs . 2356.25

(ii) Final amount is Rs. 11,300 at 4% p.a. for 3 years 3 months.

Zenith Krishna asked a question

Subject: Maths, asked on on 9/2/20

Find the greatest number which divides 45,55 and 65 leaving a remainder of 5 in each case.

Siddharth Sharma asked a question

Subject: Maths, asked on on 11/5/19

What is tha value of 8.987551787368176e+16. Give answer with solution.

God Gamer asked a question

Subject: Maths, asked on on 17/8/18

Solve question no 14 plz

Devansh Agarwal asked a question

Subject: Maths, asked on on 5/8/18

Question : Find the volume of a cubical box if the cost of painting its outer surface is rs.1440 at the rate of rs.15 per sq. m.

Ashmeet Kaur asked a question

Subject: Maths, asked on on 26/4/18

Find the square root of 44100 by long division method.

Isha Raikar asked a question

Subject: Maths, asked on on 25/11/17

Geeta saves 18% of a monthly salary if she spends rupees 10250 per month what is her monthly salary

Monika Garg asked a question

Subject: Maths, asked on on 25/5/18

Solve this:

Soham asked a question

Subject: Maths, asked on on 5/5/18

1. Find the square root of :
(i) 4761                (ii) 7744                  (iii) 15129             (iv) 0.2916
(v) 0.001225          (vi) 0.023104           (v) 27.3529

2. Find the square root of :
(i) 4.2025           (ii) 531.7636        (iii) 0.007225

Jitu Dubey asked a question

Subject: Maths, asked on on 18/4/18

24^x=1/64 solve

Akshay Kumara asked a question

Subject: Maths, asked on on 6/10/21

Find m so that (-3)^m+1 * (-3)⁵ = (-3)⁷.

Dharmraj Dubey asked a question

Subject: Maths, asked on on 6/9/17

Find the time when simple interest on Rs. 3.3 lakhs at 6% per annum is Rs. 75075 .

Mukund Kumar Pathak asked a question

Subject: Maths, asked on on 27/10/17

{(\frac{64}{125})}^{\frac{- 2}{3}} \div \frac{1}{{(\frac{256}{625})}^{\frac{- 1}{4}}} + {(\frac{\sqrt{25}}{\sqrt[3]{64}})}^{0}

Diksha asked a question

Subject: Maths, asked on on 15/3/18

Solve this:

Q6. Simplify the following :

(i)

\frac{{(8)}^{\frac{2 n}{3}} \times {(64)}^{\frac{- n}{6}}}{{(27)}^{\frac{4 n}{3}}}

(ii)

\frac{2^{n + 1} \times 4^{n + 1}}{2^{n - 1} \times 4^{n - 1}}

(iii)

\frac{4 \times 16^{n + 1} - 16 \times 4^{2 n}}{4 \times 4^{2 n + 3} - 16^{n + 1}}

(iv)

\frac{6^{2 n + 3} {(36)}^{n + 2}}{{[{(216)}^{n + 1}]}^{\frac{2}{3}}}

Q7. Prove the following :

(i)

{(\frac{x^{b}}{x^{a}})}^{b + a - c} {(\frac{x^{c}}{x^{b}})}^{c + b - a} {(\frac{x^{a}}{x^{c}})}^{(c + a - b)} = 1

(ii)

{(\frac{x^{m}}{x^{n}})}^{\frac{1}{m n}} {(\frac{x^{n}}{x^{r}})}^{\frac{1}{n r}} {(\frac{x^{r}}{x^{m}})}^{\frac{1}{r m}} = 1

(iii)

\frac{1}{1 - x^{m - n}} \times \frac{1}{1 - x^{n - m}} = 1

(iv)

{(x^{a - b})}^{a + b} . {(x^{b - c})}^{b + c} . {(x^{c - a})}^{c + a} = 1

Q8. Find x, if

(i) 3^x^{+ 1} =

\frac{1}{{(27)}^{x - 3}}

(ii) 2^5x^{– 1} = 2^3x^{+ 1} (iii) 8^x^{– 3} × 4^2x^{– 8} = (4) ^x–5 (iv) 2^x =

\frac{1}{2}

.

Gauri Gawde asked a question

Subject: Maths, asked on on 28/7/18

Pls solve q 11 and q 12

Soham asked a question

Subject: Maths, asked on on 5/5/18

Find the square root of 11025, 396900, 194481. By long division method

Chinmayee Nayak asked a question

Subject: Maths, asked on on 10/4/18

Please solve no 9
Q.9. By what number should

{[{(\frac{- 5}{2})}^{3}]}^{- 3}

be multiplied to get

{(\frac{- 2}{5})}^{5}

?

Sandosh asked a question

Subject: Maths, asked on on 13/5/18

The distance between a moon and the earth is approximately 3884000 km.Express the km in meter and express it in exponential notation.

Dharmraj Dubey asked a question

Subject: Maths, asked on on 6/9/17

Find the rate of interest when Rs.800 fetches Rs. 130 as simple interest in 2 year 6 months?

Kul Chauhan asked a question

Subject: Maths, asked on on 27/9/19

Pls send all the formulas of commercial mathematics

Ayan asked a question

Subject: Maths, asked on on 12/5/18

Q14

14 . I f 2^{x} = 4^{y} = 8^{z} a n d \frac{1}{2 x} + \frac{1}{4 y} + \frac{1}{4 z} = 4, t h e n t h e v a l u e o f x i s : - (A) \frac{7}{16} (B) \frac{7}{32} (C) \frac{7}{48}

Dharmraj Dubey asked a question

Subject: Maths, asked on on 6/9/17

Find the simple interest on Rs. 4000 at 7.5% for 3 year 3 month .

Soham asked a question

Subject: Maths, asked on on 26/5/18

Find the smallest by which 12748 be multiplied so that the product is a perfect square.

Vanshi Bhanushali asked a question

Subject: Maths, asked on on 28/12/17

Q.8. Divide 255 into two parts so that the first part is 9 less than thrice the second part.