1 find three numbers in an ap whose sum is 15 and product is 80 2 how many terms of - Maths - Arithmetic Progressions

Question

1 find three numbers in an ap whose sum is 15 and product is 80
2 how many terms of ap 22,20,28 sholuld be taken so that their sum
is zero
3 find the sum of odd positive integer less than 199
4 how many 2 digits no btween 3 and 102 are divisible by 6
5 if 7 times the nth term is eqal to 1 terms the 11th term of an ap
find the 18th term
6 which term of ap 13 ,21,29 will be 48 less than its 19th term
7 find the ap whose third term is -13 and 6th term is plus 2
8 find the AP whose 5th term is 23 and 9th term is 43
9 the angles of a triangle are in ap if smallest angle is one fifth
the sum of two angles find the angles
plz help me with this questions i have noo idea abtt them that how
to solve them

Pooja · Accepted Answer

Hi Amina, Please find below solutions to some of your queries: 1) If sum of 3 terms of an AP is given, then take the numbers in such a way that 'd' cancel out after adding the numbers Let the three numbers in AP be a - d, a, a + d Sum of numbers =

and product of numbers =

For, a = 5 and d = 3, Numbers are 2, 5 and 8 For a = 5 and d = -3 Numbers are 8, 5 and 2 3)

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