a) 9 b) 30 c) 36 d) 15 Answer: d Explanation: There are 6 candidates ...
View QuestionIn how many ways 2 students can be chosen from the class of 20 students?
a) 190 b) 180 c) 240 d) 360 Answer: a Explanation: Number of ways $$\eqalign{ & { ...
View QuestionA two member committee comprising of one male and one female member is to be constitute out of five males and three females. Amongst the females. Ms. A refuses to be a member of the committee in which Mr. B is taken as the member. In how many different ways can the committee be constituted
a) 11 b) 12 c) 13 d) 14 Answer: d Explanation: 5C1 × 3C1 - 1 ...
View QuestionHow many 5-digit positive integers exist the sum of whose digits are odd?
a) 36000 b) 38000 c) 45000 d) 90000 Answer: c Explanation: There are 9 × 104 ...
View QuestionA selection committee is to be chosen consisting of 5 ex-technicians. Now there are 12 representatives from four zones. It has further been decided that if Mr. X is selected, Y and Z will not be selected and vice-versa. In how many ways it can be done?
a) 572 b) 672 c) 472 d) 372 Answer: b Explanation: 10C5 : when both ...
View QuestionI have an amount of Rs. 10 lakh, which I went to invest in stocks of some companies. I always invest only amounts that are multiples of Rs 1 lakh in the stock of any company. If I can choose from among the stocks of five different companies, In how many ways can I invest the entire amount that I have?
a) 252 b) 250 c) 1001 d) 1089 Answer: c Explanation: The situation is similar to ...
View QuestionHow many different five-letter words can be formed using the letter from the world APPLE?
a) 24 b) 60 c) 120 d) 240 Answer: b Explanation: If the ...
View QuestionHow many arrangements of four 0’s (zeroes), two 1’s and two 2’s are there in which the first 1 occur before the first 2?
How many arrangements of four 0's (zeroes), two 1's and two 2's are there in which the first ...
View QuestionIn how many ways 4 boys and 3 girls can be seated in a row so that they are alternate.
a) 144 b) 288 c) 12 d) 256 Answer: a Explanation: Let the Arrangement be,
View QuestionIn how many ways can 10 examination papers be arranged so that the best and the worst papers never come together?
a) 8 × 9! b) 8 × 8! c) 7 × 9! d) 9 × 8!
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