Number System 65 x 288 ÷ 52 = 1.8 x ? 210 180 200 190 210 180 200 190 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 65x288/52x1.8 = 200
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 179 146 124 163 179 146 124 163 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
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 84 21 42 24 84 21 42 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 21.84 25.84 27.84 24.84 21.84 25.84 27.84 24.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System In how many different ways can the letters of the word 'DETERMINE' be arranged ? 62480 61480 60480 63480 62480 61480 60480 63480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
Number System If 35% of a number is 899.5, what is 68% of that number ? 1747.6 2247.6 1547.6 1847.6 1747.6 2247.6 1547.6 1847.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6