exam Maths Puzzle Numerical Ability Permutation and Combination

For a Lofoya Assets, a 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. Lofs is selected, Relk and Lemini will not be selected and vice-versa. In how many ways it can be done?

A.

572

B.

672

C.

472

D.

372

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exam Other Question

I 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 How many 5-digit positive integers exist the sum of whose digits are odd?

A.

36000

B.

38000

C.

45000

D.

90000