If r and s are two digits of the number 65723rs such that this number is divisible by 40, then r + s = ? (A) 6 (B) 3 (C) 2 (D) 4 Options : A B C D
Question
If r and s are two digits of the number 65723rs such that this number is divisible by 40, then r + s = ?
(A) 6 (B) 3 (C) 2 (D) 4
Options : A B C D
Solution
For a number to be divisible by 40, it must end in 00. This is because 40 is a multiple of 10, and any multiple of 10 ends in 0. Therefore, in the number 65723rs, r must be 0 and s must be 0 for the number to be divisible by 40.
So, r + s = 0 + 0 = 0.
However, 0 is not an option in the given choices (A) 6 (B) 3 (C) 2 (D) 4. Therefore, there seems to be a mistake in the question or the options provided.
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