Mathematics · 2020
JEE Main · 4 September 2020, Shift 2 · Q72
A test consists of 6 multiple choice questions, each having 4 alternative answers of which only one is correct. The number of ways, in which a…
A test consists of $\displaystyle 6$ multiple choice questions, each having $\displaystyle 4$ alternative answers of which only one is correct. The number of ways, in which a candidate answers all six questions such that exactly four of the answers are correct, is
\_\_\_\_.
Official answer
135
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JEE Main 2020 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.