Aptitude - Numbers
Exercise : Numbers - General Questions
- Numbers - Formulas
- Numbers - General Questions
66.
Which of the following numbers is divisible by each one of 3, 7, 9 and 11 ?
Answer: Option
Explanation:
639 is not divisible by 7
2079 is divisible by each of 3, 7, 9, 11.
67.
Which natural number is nearest to 9217, which is completely divisible by 88 ?
Answer: Option
Explanation:
On dividing we get, 88) 9217 (104 88 ---- 417 352 ---- 65 ---- Therefore, Required number = 9217 + (88 - 65) // Because (88 - 65) < 65. = 9217 + 23 = 9240.
68.
(4300731) - ? = 2535618
Answer: Option
Explanation:
Let 4300731 - x = 2535618
Then x, = 4300731 - 2535618 = 1765113
69.
n is a whole number which when divided by 4 gives 3 as remainder. What will be the remainder when 2n is divided by 4 ?
Answer: Option
Explanation:
Let n = 4q + 3. Then 2n = 8q + 6 = 4(2q + 1 ) + 2.
Thus, when 2n is divided by 4, the remainder is 2.
70.
(489 + 375)2 - (489 - 375)2 | = ? |
(489 x 375) |
Answer: Option
Explanation:
Given Exp. = | (a + b)2 - (a - b)2 | = | 4ab | = 4 |
ab | ab |
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