Question

श्रेणी 1,1/2,0, -1/2.... का 15वाँ पद ज्ञात करें।​

Answer 1

Answer:

Here,

a=1, d= 1/2-1= -1/2, n=15

We know that,

an = a+(n-1)d

a15 = 1+(15-1)(-1/2)

a15 = 1+14(-1/2)

a15 = 1+(-7)

a15 = 1-7

Therefore,

a15 = -6

Hope you found it useful.