Number System Twenty times a positive integer is less than its square by 96. What is the integer? 30 Cannot be determined 20 24 30 Cannot be determined 20 24 ANSWER DOWNLOAD EXAMIANS APP
Number System If the numerator of a fraction is increased by 200% and the denominator by 300%, the fraction thus obtained is 1/36. What is the original fractions ? 6/9 3/9 4/9 5/9 6/9 3/9 4/9 5/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fractions be x/yx + 200% of x/y + 300% of y = 1/3= x + 2x/y + 3y = 1/3= 3x/4y = 1/3Hence x/y = 4/9
Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 60 260 180 120 60 260 180 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 3x/4 = 10800= x² = 10800 x 4/3 = 14400∴ x = √14400 = 120
Number System What is 432 times 119 ? 53408 51408 50408 52408 53408 51408 50408 52408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System 7.8% of 12.5 + 2.5% of 161 = ? 12 5 2 9 12 5 2 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 12.5/100 + 2.5 x 161/100= 0.975 + 4.025= 5
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1) N(N + 1)/2 N2 + 1 N2 N(N + 1) N(N + 1)/2 N2 + 1 N2 ANSWER DOWNLOAD EXAMIANS APP
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