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Prithika
Subject: Maths
, asked on 23/5/18
4th.q
4
.
If
x
,
y
,
z
are
in
A
.
P
.
then
the
value
of
x
+
y
-
z
y
+
z
-
x
is
(
A
)
8
yz
-
3
y
2
-
4
z
2
(
B
)
4
xz
-
3
y
2
(
C
)
8
xy
-
4
x
2
-
3
y
2
(
D
)
10
xz
-
3
x
2
-
3
z
2
4
.
If
x
,
y
,
z
are
in
A
.
P
.
then
the
value
of
x
+
y
-
z
y
+
z
-
x
is
(
A
)
8
yz
-
3
y
2
-
4
z
2
(
B
)
4
xz
-
3
y
2
(
C
)
8
xy
-
4
x
2
-
3
y
2
(
D
)
10
xz
-
3
x
2
-
3
z
2
Answer
1
Prithika
Subject: Maths
, asked on 23/5/18
Q.2. The sum of n terms of 2 arithmetic progressions are in the ratio of (7n + 1) : (4n + 27). The ratio of their
11
t
h
terms is
(A) 148 : 111
(B) 111 : 148
(C) 111 : 148
(D) 148 : 121
Answer
2
Prithika
Subject: Maths
, asked on 23/5/18
10th q
10.
If a
1
, a
2
, a
3
........................... is an A.P. such that a
1
+ a
5
+ a
10
+ a
15
+ a
20
+ a
24
= 225, then a
1
+ a
2
+ a
3
+ .... + a
23
+ a
24
is equal to
(A) 909 (B) 75
(C) 750 (D) 900
Answer
1
Prithika
Subject: Maths
, asked on 23/5/18
16
Answer
1
Prithika
Subject: Maths
, asked on 23/5/18
29
29.
A man arranges to pay off a debt of Rs. 3600 by 40 annual instalments which are in A.P. When 30 of the instalments are paid, he dies leaving one- thirds of the debt unpaid. Find the value of the 8
th
instalment.
Answer
1
Prithika
Subject: Maths
, asked on 23/5/18
Q.28. 150 workers were engaged to finish a piece of work in acertain number of days. Four workers dropped the second day, four workers deopped the third day and so on, it takes 8 more days to finish the work now. Find the number of days in which the work was completed.
Answer
1
Prithika
Subject: Maths
, asked on 23/5/18
26 th
Q.26. If the pth term of an A.P. is a and qth term is b, show that the sum of (p + q) terms is
p
+
q
2
a
+
b
+
a
-
b
p
-
q
Answer
2
Prithika
Subject: Maths
, asked on 23/5/18
23rd q
Answer
1
Sannidhya Mate
Subject: Maths
, asked on 22/5/18
Please help
Q. Find the sum of
1
.
10
1
+
2
.
10
2
+
3
.
10
3
+
.
.
.
.
.
.
99
.
10
99
Answer
2
Sannidhya Mate
Subject: Maths
, asked on 21/5/18
I
f
a
,
b
a
n
d
c
a
r
e
i
n
A
P
t
h
e
n
a
+
1
b
,
b
+
1
c
a
,
c
+
1
a
b
a
r
e
i
n
(
a
)
A
P
(
b
)
G
P
(
c
)
H
P
(
d
)
N
o
n
e
o
f
t
h
e
s
e
Answer
1
Bhavya Biswas
Subject: Maths
, asked on 20/5/18
Write the sequence with nth term
An =6-n
Answer
2
Prithika
Subject: Maths
, asked on 19/5/18
Q2
Answer
2
Siddharth
Subject: Maths
, asked on 16/5/18
Ans it
Answer
1
Sannidhya Mate
Subject: Maths
, asked on 16/5/18
The product of first 5 terms of a geometric progression is 32.if the fourth term is 17 compute the 2nd term
Answer
2
Sannidhya Mate
Subject: Maths
, asked on 16/5/18
the product of first 5 terms of a geometric progression is 32
Answer
1
1
2
3
4
5
Next
What are you looking for?
(A) 148 : 111
(B) 111 : 148
(C) 111 : 148
(D) 148 : 121
10. If a1, a2, a3 ........................... is an A.P. such that a1 + a5 + a10 + a15 + a20 + a24 = 225, then a1 + a2 + a3 + .... + a23 + a24 is equal to
(A) 909 (B) 75
(C) 750 (D) 900
29. A man arranges to pay off a debt of Rs. 3600 by 40 annual instalments which are in A.P. When 30 of the instalments are paid, he dies leaving one- thirds of the debt unpaid. Find the value of the 8th instalment.
Q.26. If the pth term of an A.P. is a and qth term is b, show that the sum of (p + q) terms is
Q. Find the sum of
An =6-n