Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 40 39 42 41 40 39 42 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System What is the least number, which is perfect square but contains 2700 as its factor? 2700 10800 5400 1800 2700 10800 5400 1800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 900 * 3 * 3 = 8100
Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 515 720 556 660 515 720 556 660 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In FRUGAL there ae six difference letters Therefore, 6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits? 7 60 12 8 7 60 12 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/5 * 1/5 = 9x = 75 => 7 + 5 = 12
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 4 10 6 5 4 10 6 5 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the least number that should be added to 5200 to make it a perfect square ? 288 225 129 275 288 225 129 275 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.
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