One ball is picked up randomly from a bag containing 8 yellow, 7 blue and 6 black balls. What is the probability that it is neither yellow nor black?

1:

3/4

2:

4/7

3:

2/9

4:

1/3

5:

None of the above

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IBPS RRB PO Prelims 2017

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Chapters. Probability

A bag contains 6 Red, 5 Green, and 4 Yellow coloured balls. 2 balls are drawn at random after one another without replacement then what is the probability that at least one ball is Green?

Chapters. Sequence

If 1 is subtracted from each odd number and 2 is added to each even in the number **9436527**, then how many digits will appear twice in the new number thus formed?

Chapters. Boats and Stream

The speed of a boat in still water is (27/4) km/hr. The time required to travel a certain distance upstream is five times than that of downstream for the same distance. Find the speed of the stream?

Chapters. Profit and Loss

Cost price of B is 200 more than the cost price of A. B is sold at 10% profit and A is sold at 40% loss and selling price of A and B are in the ratio 4 : 11. If A is sold at 20% loss then what will be selling price of A?

Chapters. Alligation and Mixture

Swami brought pulses of worth INR 32/kg and INR 45/kg. He mixed them with a third variety in the ratio 1 : 1 : 2. If the mixture is worth INR 88/kg, then the price of the third variety per kg will be:

Chapters. Problems on Ages

The present age of A is 3 years less than the present age of B. Ratio of B’s age 5 years ago and A’s age 4 years hence is 3 : 4 then find present age (in years) of A?

Chapters. Sequence

How many letters will remain the same position in the word** ‘MONSTER**’ when they arranged in the ascending order from left to right?

Chapters. Sequence

How many such digits are there in the number **935126** which remain same in the number as when the digits are rearranged in descending order within the number?

Chapters. Alphanumeric

The positions of how many alphabets will remain unchanged if each of the alphabets in the word **PROACTIVE** is arranged in alphabetical order from left to right?

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