Question

72 + 63 +54 + ............. श्रेणी में शून्य किस स्थान पर होगा?
(A) 11वाँ (B) 10वाँC) 9वाँ (D) 8वाँ​

Answer 1

Answer:

B..........................

Answer 2

Answer:

(option c)

explanation

here

first term = 72

d = - 9

an = a + (n-1)(d)

an = 0 = 72 + (n-1)(-9)

8 + (n - 1)(-1) = 0

8 - n + 1 = 0

n = 9

thus 9th term will be zero(0) i.e. sunya.

hope this will help you