Difficulty Popularity

If you throw two dice at a same time.

Can you find the probability of getting sum as 10 of the two numbers shown ?

Can you find the probability of getting sum as 10 of the two numbers shown ?

Difficulty Popularity

Adam is one of the finalist in an IQ championship. As the final test, he is provided with two hourglass. One of them can measure eleven minutes while the other one can measure thirteen minutes.

He is asked to measure exactly fifteen minutes using those two hourglasses. How will he do it ?

He is asked to measure exactly fifteen minutes using those two hourglasses. How will he do it ?

Difficulty Popularity

Eight Brothers lives in an old house where there is no electricity and no computers or any any other gadget.

Brother-1: Reading Comics

Brother-2: Playing Chess

Brother-3: Writing

Brother-4: making food for the family

Brother-5: sleeping and snoring

Brother-6: cleaning house

Brother-7: watering the plants

what is Brother-8 doing ?

Brother-1: Reading Comics

Brother-2: Playing Chess

Brother-3: Writing

Brother-4: making food for the family

Brother-5: sleeping and snoring

Brother-6: cleaning house

Brother-7: watering the plants

what is Brother-8 doing ?

Difficulty Popularity

You keep tossing a fair coin for twenty times. Each time, the coin lands up with tails up.

What is the probability that if you toss it now, the coin will land with heads up this time?

What is the probability that if you toss it now, the coin will land with heads up this time?

Difficulty Popularity

There are three bags.The first bag has two blue rocks. The second bag has two red rocks. The third bag has a blue and a red rock. All bags are labeled but all labels are wrong.You are allowed to open one bag, pick one rock at random, see its color and put it back into the bag, without seeing the color of the other rock.

How many such operations are necessary to correctly label the bags ?

How many such operations are necessary to correctly label the bags ?

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