# Find the missing no.-3,8,24,48,?,168

2
by Deleted account

2015-10-24T17:17:41+05:30

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3, 8, 24, 48,  ...,  168

2²-1,  3²-2,  5²-1 ,  7²-1, .. ,  13² -1

prime numbers... 2,3,5, 7,  11,  13..
so missing number is  11²-1 = 120
2015-10-29T18:34:46+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
If you add 1 to each number, you can see that they are square of numbers
3+1 = 4 = 2^2
8+1 = 9 = 3^2
24+1 = 25 = 5^2
48+1 = 49 = 7^2
168+1 = 169 = 13^2
All are prime squares.
The missing prime is 11
So answer is 11^2 - 1 = 121-1=120