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A committee of four persons is to be selected from 8 computer engineers and 3 mechanical engineers so as to include at least one mechanical engineers. The possible no. of ways are?

Sir, can I use angle=arc length/radius formula to the following sum? If not, why? Can  u plz explain sir?

When pendulum of length 50cm oscillates, it produces an arc of 16cm. The angle so formed in degree measure is (approx)

The letters of the word endeavor are arranged in all possible ways.The no. of arrangements when A and V are not together are?

out of 6 different science books and 4 diff maths books in how many ways can we select 4 books if 2 of each are necessary?

out of 6 different science books and 4 diff maths books in how many ways can we select 4 books if 2 of each are necessary?

Can any tell me.. How to curtail faults in during RC?

Fujitsu

is there any whatsapp group where people preparing for CAT17 can discuss things and  get their doubts cleared ? 

shskdl

What is the meaning of a=b mod c?