Number System If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 689 652 692 678 689 652 692 678 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
Number System 68375 + 72848 - ? = 34346 + 49569 57308 None of these 59308 58308 57308 None of these 59308 58308 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 68375 + 72848 - 34346 - 49569 = 141223 - 83915 = 57308
Number System Find the number of factors of 300 excluding 1 and itself. 14 16 18 15 14 16 18 15 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the least value of 3x + 4y if x2y3 = 6. 6 10 3 7 6 10 3 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
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% ? 80 litre 85 litre 95 litre 90 litre 80 litre 85 litre 95 litre 90 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
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 724 636 673 845 724 636 673 845 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
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