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The MCQs below are drawn from the Mathematics subject category.
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8241
A number when divided by 7 leaves a remainder 4. What will be the remainder when the square of the same number is divided by 7? (a) 2 (b) 4 (c) 1 (d) 3
In a five-digit number, the digit in the hundred's place is 2 and the digit in the unit's place is twice the digit in the hundred's place. The digit at thousands place is zero. The digit in the ten thousand's place is the sum of the digit in the hundred's place and the digit in the unit's place. The digit in the ten's place is the digit in the ten thousand's place minus 1. The number is: (a) 60234 (b) 60224 (c) 60254 (d) 60264
Find the sum of the smallest and the largest positive numbers of 6 digits which contain only digits 0, 4, 6 and each of these digits appears at least once. (a) 666444 (b) 604604 (c) 666666 (d) 1066646
We can use modular arithmetic to find the pattern of remainders of powers of 3 when divided by 7.
8246
If 3 is added to each odd digit and 1 is subtracted from each even digit in the number 42514563, what will be the difference between the highest and lowest digits thus formed? (a) 2 (b) 7 (c) 5 (d) 8
The divisibility rule for 9 states that a number is divisible by 9 if the sum of its digits is divisible by 9. We will check the sum of the digits for each option.
8248
Which numbers have a remainder of 0 when divided by 5?
