These questions are based on the given 3-digit numbers.
732 517 293 315 638
In how many of the given numbers, the product of the first and the second digits, is a multiple of the third digit ?
Numbers : 732 517 293 315 638
Product of the first and the second digits :
732 = $$7\times3=21\neq2k$$
517 = $$5\times1=5\neq7k$$
293 = $$2\times9=18=3\times6$$
315 = $$3\times1\neq5k$$
638 = $$6\times3=18\neq8k$$
Thus, only in 293, the product of the first and the second digits, is a multiple of the third digit.
=> Ans - (B)
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