RRB Group D 15-Oct-2018 Shift 1 Solved Paper

Question : 23 of 84

Marks: +1, -0

Find the smallest number which on adding 19 makes it exactly divisible by 36,64 and 90 .

Solution:

LCM of 36, 64, 90

=2 \×2 \×2 \×2 \×2 \×2 \×3

\×3 \×5

Required number

=2880-19=2861

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