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? 14 17 21 33 14 17 21 33 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 12
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 19765 18456 17453 20160 19765 18456 17453 20160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 5/4 3/5 4/5 3/10 5/4 3/5 4/5 3/10 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 The number of prime factors of (6)10×(7)17×(55)27 61 41 91 101 61 41 91 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
Number System 8988 / 8 / 4 = ? 2247 4494 280.875 561.75 2247 4494 280.875 561.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System In how many different ways can the letters of word 'BIOLOGY' be arranged ? 2520 2410 2367 2678 2520 2410 2367 2678 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520
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