Number System A shopkeeper purchased 200 bulbs for Rs. 10 each. However, 5 bulbs were fused and had to be thrown away. The remaining were sold at Rs. 12 each. What will be percentage profit? 33 17 21 14 33 17 21 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 12
Number System If the difference between a number and its three-fourth is 18, find the number. 57 68 61 72 57 68 61 72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
Number System 35 + 15 * 1.5 = ? 5.25 75 51.5 57.5 5.25 75 51.5 57.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5
Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 3/10 4/5 3/5 5/4 3/10 4/5 3/5 5/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1280 1240 1300 1260 1280 1240 1300 1260 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 26 28 29 30 26 28 29 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 1 and x + 2 Then,x + (x + 1) + (x + 2) = 873x = 84x = 28Greatest number, (x + 2) = 30.
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