Number System 7.8 x 4.5 x 4.2/0.14 = ? 1012 1087 1032 1053 1012 1087 1032 1053 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 4.5 x 4.2/0.14 = 1053
Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 58 56 60 54 58 56 60 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.
Number System What is the difference between the largest and the smallest number written with 7, 7, 0, 7? 6093 6893 6993 693 6093 6893 6993 693 ANSWER DOWNLOAD EXAMIANS APP
Number System If the numerator of a fraction is decreased by 12.5% and the denominator is increased by 180% the resultant fraction is 1/2. What is the original fraction ? 8/5 1/5 3/5 7/5 8/5 1/5 3/5 7/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the original fraction be x/y.∴ x x 87.5/100/y x 280/100 = 1/2or 87.5x/280y = 1/2∴ 175x = 280y∴ x/y = 280/175 = 8/5
Number System In how many different ways can the letters of the word CORPORATION be arranged ? 1326400 None of these 3326400 2326400 1326400 None of these 3326400 2326400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP CORPORATION = 11 letters 'O' comes thrice,'R' twice.∴ total no. of ways = 111/3121 = 3326400
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 510 860 720 640 510 860 720 640 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
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