Number System 35%of ?=242 487 542 394 693 487 542 394 693 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System If the difference between a number and its 2/5 is 240, find the number. 400 480 440 360 400 480 440 360 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore x - 2x/5 = 240, Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400
Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 222 204 234 210 222 204 234 210 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
Number System What is the sum of all the composite numbers up to 20? 128 132 130 131 128 132 130 131 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
Number System What least number should be added to 8602 to make it a perfect square ? 51 47 41 36 51 47 41 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System A number consists of 3 digit whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is: 253 352 370 145 253 352 370 145 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the middle digit be x. Then, 2x = 10 or x = 5.So, the number is either 253 or 352. Since the number increases on reversing the digits, so the hundred's digit is smaller than the unit's digit. Hence, required number = 253.
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