no.of neutrons in 4g of atoms of 1 H² .
1] NA, 2] 2 NA, 3]4NA, 4]ZERO
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. Time taken by A alone to finish a piece of work is 60% more than that taken by A and B together to finish the same piece of work. C is twice as efficient as B. If B and C together can complete the same piece of 1 work in 13-days, in how many days can 3 A alone finish the same piece of work? [SBI PO (Pre) 2017] (b) 24 (C) 16 (d) 28 (e) Other than those given as options
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