Question

Maths class 10. ill mark you as the brainliest ​

Answer 1

1)-14

3)149

4)28

bro I not gatted the answer of 2 sorry. (=_=)

explanation:

(1)

a1=3 , d=5

a1+(n-1)d

248=3+(n-1)5

248-3=(n-1)5

245=(n-1)5

245/5=n-1

49=n-1

n=49+1

n=50

(3)

its very easy we have to do half of 292 for its 50th term

note:-not sure about this answer

(4)

a1=7, d=3, an=184

therefore, an=a1+(n-1)d

184=7+(n-1)3

184-7=(n-1)3

177/3=n-1

59=n-1

n=59+1

n=60

Answer 2

Answer:

60 is your answer.......