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A two-digit number $(k)$ is a multiple of 7 and 7 times this number ha
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30 Apr 2025, 00:18
30 Apr 2025, 00:18
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Question Stats:
30% (01:33) correct
69% (01:49) wrong based on 13 sessions
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A two-digit number $(k)$ is a multiple of 7 and 7 times this number has 7 in its unit's place.
Quantity A |
Quantity B |
k |
49 |
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Re: A two-digit number $(k)$ is a multiple of 7 and 7 times this number ha
[#permalink]
07 May 2025, 04:15
07 May 2025, 04:15
Expert Reply
Given $K=$ multiple of 7 and $\(7 K=\ldots \ldots \ldots \ldots \ldots \ldots \ldots .7 \Rightarrow\)$ units digit of $\(K=1.21\)$ and 91 are the possible two-digit numbers that are multiples of 7 and have 7 in the units place when multiplied by 7 .
Hence, the values of Column A can be 21 or 91 and the value in Column B is 49 .
Since there are two possible solutions, we cannot determine the answer. Thus, the correct option is $D$.
Hence, the values of Column A can be 21 or 91 and the value in Column B is 49 .
Since there are two possible solutions, we cannot determine the answer. Thus, the correct option is $D$.
gmatclubot
Re: A two-digit number $(k)$ is a multiple of 7 and 7 times this number ha [#permalink]
07 May 2025, 04:15
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