# Tag: math & puzzles

### Questions Related to math & puzzles

How many prime numbers are there between 1 and 100 ?

1. 28

2. 24

3. 25

4. 27

Which of the following is a composite number: 37, 47, 57, 67?

1. 37

2. 57

3. 67

4. 47

How many pairs of prime numbers are there to express 18 as the sum of two prime numbers?

1. 1

2. 4

3. 3

4. 2

How many even primes are there between 1 and 100 ?

1. 2

2. 1

3. 3

4. 5

What is the next prime number in the following series 41 43 47 …......?

1. 49

2. 57

3. 53

4. 59

Fill in the blanks 0, 6, 24, 60,120, 210, ____?

1. 320

2. 336

3. 352

4. 330

who is known as computer of arithmatic?

1. charles barbage

2. abdul kalam

3. shakuntala devi

4. Brahmagupta

what is the partial derivative of e^(lnx^2) wrt y?

1. 1/lnx

2. lnx

3. 2lnx

4. 0

what is the total no. of square u can create in a chess board?

1. 228

2. 216

3. 204

4. 256

In a pot there are some bacteria. And in every half day the volume of bacteria doubles and in 10 days the pot becomes full. Then in how many days the pot will become exactly half?

1. 4.5

2. 5

3. 5.5

4. 8.5

5. 9.5

6. 9