Number System The sum of three consecutive multiples of 3 is 72. What is the largest number? 21 36 24 27 21 36 24 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
Number System Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5. 187 207 219 197 187 207 219 197 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 'N' is the smallest number which divided by 13 and 16 leaves respective remainders of 2 and 5.Required number = (LCM of 13 and 16) - (common difference of divisors and remainders) = (208) - (11) = 197.
Number System 17580 x 1.8 - 13720 x 2.1 = ? x 2.4 1160 1140 1180 1120 1160 1140 1180 1120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2.4 x ? = 31644 - 28812 = 2832∴ ? = 2832/2.4= 1180
Number System What is the least number that should be added to 5200 to make it a perfect square ? 288 129 275 225 288 129 275 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP We sec (73)² = 5329 and (72)² = 5184ie 5329 > 5200 > 5184So 129 should be added to make is perfect square.
Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 69 72 42 90 69 72 42 90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 48 36 56 52 48 36 56 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
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