This question was asked in Ex 5.1, 1

Determine the a.p. whose third term is 16and 7th term exceed the 5th term by 12

all type music

Nov. 3, 2019, 10:45 a.m.

Answers!

all type music

Nov. 3, 2019, 10:52 a.m.

a3=a 2d=16________1 eq.
a7=a 6d________2eq.
a5=a 4d________3eq.

From eq. 2and3

(a 6d)-(a 4d)=12
2d=12
d=6

Putting value of d in eq.1

a 2(6)=16
a 12=16
a=16-12
a=4

Comment

Class 6

Class 7

Class 8

Class 9

Class 10

Class 11

Class 12

Courses

Interesting

Popular