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Mathematics · 2014
JEE Main · 9 April 2014, Shift 1 · Q68
The sum of the digits in the unit's place of all the 4-digit numbers formed by using the numbers 3, 4, 5 and 6, without repetition, is:
The sum of the digits in the unit's place of all the $\displaystyle 4$-digit numbers formed by using the numbers $\displaystyle 3$, $\displaystyle 4$, $\displaystyle 5$ and $\displaystyle 6$, without repetition, is :
Official answer
(2)
$\displaystyle 108$
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JEE Main 2014 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.