3, 20, 87, 392, ? | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The pattern follows a sequence of operations involving squares and alternating additions/subtractions.Step $1$: $3 + (1^2 + 16) = 3 + 17 = 20$Step

Vedclass · Accepted Answer

$1003$

Vedclass · Answer

(D) The pattern follows a sequence of operations involving squares and alternating additions/subtractions.Step $1$: $3 + (1^2 + 16) = 3 + 17 = 20$Step $2$: $20 + (9^2 - 14) = 20 + 67 = 87$Step $3$: $87 + (17^2 + 16) = 87 + 305 = 392$Step $4$: $392 + (25^2 - 14) = 392 + 611 = 1003$The sequence of squares added/subtracted is $1^2, 9^2, 17^2, 25^2$ (increasing by $8$) and the constant terms alternate between $+16$ and $-14$.Thus,the missing number is $1003$.

$3, 20, 87, 392, ?$

Similar Questions

$8, 64, 216, 512, \dots$

Find out the odd number from the given sequence: $13, 25, 40, 57, 79, 103, 130$.

Find out the odd number from the given sequence: $0, 7, 26, 63, 124, 217$.

Find out the odd number from the given sequence: $8, 12, 24, 46, 72, 108, 216$.

Find the odd number from the given sequence: $2, 5, 11, 23, 45, 95$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module