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: 5 6 10 4 5 6 10 4 ANSWER DOWNLOAD EXAMIANS APP
Number System Three numbers which are co-prime to one another are such that the product of the first two 551 and that of the last two is 1073. The sum of the three numbers is 93 85 74 110 93 85 74 110 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 85
Number System The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ? 145314 145714 145914 145214 145314 145714 145914 145214 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Population of the town= 168480 x 115/100 x 75/100= 145314
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 121 111 131 101 121 111 131 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System One-eighth of a number is 76. What will be 54% of the number ? 321.32 332.32 318.32 328.32 321.32 332.32 318.32 328.32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, 1/8 of x = 76Therefore, x = 60854% of 608 = 608 x 54/100 = 328.32
Number System The sum of the two digits of a two-digit number is 15 and the difference between the two digits of the two digit number is 3. What is the product of the two digits of the two digit number ? 14 36 54 None of these 14 36 54 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10 x + yWhere x > yAccording to the question,x + y = 15 and x - y = 3Solving both the equations,x = 9, y = 6∴ x x y = 9 x 6 = 54
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