Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 54 56 60 58 54 56 60 58 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 0.333 .... × 0.444 .... is equal to 0.121212 .... 1.333 .... 0.777 .... 0.148148148 .... 0.121212 .... 1.333 .... 0.777 .... 0.148148148 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
Number System How many words can be made using the letters of the word "BHAG WADGITA" if all the vowels come together and all the consonants come together ? 30160 40160 10160 20160 30160 40160 10160 20160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of words = l2 l4 l7 / l3 l2 = 20160
Number System Which one of the following represents the sum of the first n even numbers? N(N + 1) N(N – 1) N2+ 1 N2 N(N + 1) N(N – 1) N2+ 1 N2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP N (N + 1)
Number System Find the greatest four digit number which leaves respective remainders of 2 and 5 when divided by 15 and 24. None of these 9125 9565 9974 None of these 9125 9565 9974 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Since the difference between the divisors and the respective remainders is not constant, back substitution is the convenient method. None of the given numbers is satisfying the condition.
Number System The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is: 40 20 None of these 30 40 20 None of these 30 ANSWER DOWNLOAD EXAMIANS APP
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