The later schools question and answer requested students to tell what they feel is the most crucial important challenge for a student to do in order to accomplish success. From the numerous replies, one that that stood out was practice. Successful people surely are not born successful; they become successful from hard work and commitment. If you wish to obtain your goals, keep this in mind! Below some question and answer examples that you could utilise to enriches your knowledge and gain insight that will guide you to preserve your school studies.

## Question:

Which of the following is a composite number?

A.91

B.139

C.13

D.29

## Answer:

The composite number is .** Option (A) is correct.
**

**Further explanation:
**

Factors are the numbers that are multiplied together to obtain the original number.

The composite numbers are those who have more than 2 factors.

The prime numbers are those who have exactly 2 factors.

**Given:
**

The options are as follows,

(A). 91

(B). 139

(C). 13

(D). 29

**Explanation:
**

The factors of 91 are 1, 7, 13 and 91.

91 have 4 factors.

Therefore, 91 is a composite number.

The factors of 139 are 1 and 139.

139 have 2 factors.

Therefore, 139 is a prime number.

The factors of 13 are 1 and 13.

13 have 2 factors.

Therefore, 13 is a prime number.

The factors of 29 are 1 and 29.

29 have 2 factors.

Therefore, 29 is a prime number.

The composite number is

**Option (A) is correct** as 91 is a composite number.

Option (B) is not correct as 139 is a prime number.

Option (C) is not correct as 13 is a prime number.

Option (D) is not correct as 29 is a prime number.

**Learn more:
**

**Answer details:
**

**Grade:** Middle School

**Subject: **Mathematics

**Chapter: **Composite numbers

**Keywords:** composite number, prime number, numbers, real number, 91, 139, 13, 29.

They can potentially hopefully help the student sort out the question by working with the questions and answer examples. Then would possibly carry out some sharing in a group discussion and also study with the classmate regarding the topic, so another student also gain some enlightenment and still keeps up the school learning.