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If 2x2x2 cube having weight 1.5 kg cost RS 1000. how much does 3x3x3 cube cost?

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TCS Other Question

A series is formed such that next num is 1+ sum of all previous nums. If 10th term of series is 1280, than what is 1st term.
a)1
B)4
C)5
D)None

Ans: 4
a man can dig 2x2x2 well in 1hr.How much time he need to dig 4x4x4 well?
1. 2hrs
2. 4hrs
3. 8 hrs.
4. none of these