Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N2 + 1 N(N + 1) N2 N(N + 1)/2 N2 + 1 N(N + 1) N2 N(N + 1)/2 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the difference between the largest and the smallest number written with 7, 7, 0, 7? 693 6093 6893 6993 693 6093 6893 6993 ANSWER DOWNLOAD EXAMIANS APP
Number System Which choice provides the answer : If 2 + 3 = 10, 6 + 5 = 66, 7 + 2 = 63, 9 + 7 = 144 then, 8 + 4 = ? 96 102 88 114 96 102 88 114 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 96
Number System 3√103823 = ? 47 41 52 44 47 41 52 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System If 70% of an equal to 40% of b, then ratio between a and b is? 7: 11 None 4: 7 7: 4 7: 11 None 4: 7 7: 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
Number System In a 150-litre mixture of milk and water, the percentage of milk is 84%. How much water should be added so that the percentage of milk becomes 52.5% ? 90 litre 85 litre 95 litre 80 litre 90 litre 85 litre 95 litre 80 litre ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In 150 litre, milk is 84%ie 150 x 84/100 = 126 litre Let us add x litres of waterTherefore, the quantity of mixture = 150 + x∴ 52.5% of (150 + x) = 126 litres 150 + x = 126x100/52.5 = 240 litres∴ x = 240 - 150 = 90 litres
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