Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 120 124 112 116 120 124 112 116 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a + b = 16 Therefore, (a+b)² = (16)² = 256 a² + b² + 2ab = 256Therefore, a² + b² = 256 - 2 x 68Therefore, a² + b² = 256 - 136 = 120
Number System (95.6x 910.3) ÷ 92.56256 = 9? 12.24 15.54 13.34 14.44 12.24 15.54 13.34 14.44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 13.34
Number System 432+2170+35=? 678 729 494 523 678 729 494 523 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 494
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1240 1260 1280 1300 1240 1260 1280 1300 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System How many figures are required for numbering the pages of a book containing 1000 pages? 2893 3892 2883 6489 2893 3892 2883 6489 ANSWER DOWNLOAD EXAMIANS APP
Number System 35%of ?=242 693 487 542 394 693 487 542 394 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
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