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Flash
Maths
Number System
If the number 517*324 is completely divisible by 3, then the smallest whole number in the place of * is:
यदि संख्या 517*324, 3 से पूर्णतः विभाज्य है, तो * के स्थान पर सबसे छोटी पूर्ण संख्या होगी:
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A
(a) 2
B
(b) 1
C
(c) 7
D
(d) 5
Show Correct Answer
Correct Answer: Option C
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Explanation / व्याख्या:
5+1+7+*+3+2+4=22+*. 22+*≡0 mod 3 ⟹ *≡2 mod 3. Smallest=2.
22+* ≡ 0 (mod 3) ⟹ *=2।
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