Number System What is the value of ? in the following equations ? 72/? = ?/50 100 40 60 80 100 40 60 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 18456 19765 20160 17453 18456 19765 20160 17453 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
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% ? 85 litre 90 litre 80 litre 95 litre 85 litre 90 litre 80 litre 95 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 Sum of two consecutive even terms lacks by 98 from their product. Find the sum of these number 24 18 32 None 24 18 32 None ANSWER DOWNLOAD EXAMIANS APP
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 6 2 5 9 6 2 5 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
Number System The product of two successive numbers is 4556. Which of the following is the larger of the two numbers? 68 78 67 63 68 78 67 63 ANSWER DOWNLOAD EXAMIANS APP
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