Number System 64% of 2650+40% 0f 320=? 1578 1247 1824 2096 1578 1247 1824 2096 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number? 140 240 160 180 140 240 160 180 ANSWER DOWNLOAD EXAMIANS APP
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 20 23 22 21 20 23 22 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by: 3 11 9 5 3 11 9 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and unit's digit be y. Then, number 10x + y.Number obtained by interchanging the digits = 10y + x.(10x + y) + (10y + x) = 11(x + y)which is divisible by 11.
Number System What least number shall be added to 4700 to make it a perfect square ? 81 71 91 61 81 71 91 61 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 179 163 124 146 179 163 124 146 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
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