Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 9 10 8 7 9 10 8 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System If the fractions 1/7, 3/5, 2/5, 5/6 and 9/11 are arranged in descending order of their values, which one will be the fourth number? 2/5 1/5 4/5 3/5 2/5 1/5 4/5 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/4 = 14. 3/5 = 6.2/5 = 4.5/6 = 83.9/11 = 82.Therefore, 83 > 82 > 6 > 14
Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 556 515 660 720 556 515 660 720 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In FRUGAL there ae six difference letters Therefore, 6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System Twenty times a positive integer is less than its square by 96. What is the integer? 24 30 20 Cannot be determined 24 30 20 Cannot be determined ANSWER DOWNLOAD EXAMIANS APP
Number System Of an amount, 20% of 25% of 30% is Rs 75. Then what is the original amount ? Rs. 3000 Rs. 4000 Rs. 2000 Rs. 5000 Rs. 3000 Rs. 4000 Rs. 2000 Rs. 5000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the amount be x.∴ X x 20/100 x 25/100 x 30/100 = 75∴ X = 75 x 5 x 4 x 10/3 = 5000
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