Information and Communication Technology MCQ - Number System
∴165 + 215 = (24)5 + 215 =220 +215
= 215 (32 + 1)= 33x 215
Hence, it is divisible by 33.
A number is divisible by 11, if the difference of the sum of its digits at odd
places and the sum of its digit of even " places, is either 0 or a number divisible
by 11.∴ (5 + 9 + * + 7) - (4 + 3 + 8) = 0 or multiple of 11
⇒ (21 + *) - 15 = 0 or mUltiple of 11.
⇒ 6 + * = 0 or multiple of 11.
⇒ * + 6 =a multiple of 11.
⇒*+6=11
⇒ *=5
Given, n(n + l)(n + 2)
Now, putting n = 1. we have
1 (1 + 1) (1 + 2)= 1 x 2 x 3 = 6
