PHP Math MCQ Questions and Answers

1. Which function is used to calculate the absolute value of a number in PHP?

a) abs()

b) fabs()

c) absolute()

d) mod()

Answer:

a) abs()

Explanation:

The abs() function is used to calculate the absolute value of a number in PHP.

2. How do you generate a random number between 5 and 15 in PHP?

a) rand(5, 15)

b) random(5, 15)

c) mt_rand(5, 15)

d) Both a) and c)

Answer:

d) Both a) and c)

Explanation:

Both rand() and mt_rand() can be used to generate a random number in the specified range.

3. Which function is used to round a float to the nearest integer in PHP?

a) round()

b) floor()

c) ceil()

d) int()

Answer:

a) round()

Explanation:

The round() function is used to round a float to the nearest integer.

4. What is the result of the expression pow(2, 3) in PHP?

a) 5

b) 6

c) 8

d) 9

Answer:

c) 8

Explanation:

pow(2, 3) calculates 2 raised to the power of 3, which is 8.

5. How do you calculate the square root of a number in PHP?

a) sqrt()

b) square()

c) root()

d) pow()

Answer:

a) sqrt()

Explanation:

The sqrt() function is used to calculate the square root of a number.

6. What does the PHP function fmod() do?

a) Finds the modulus of two numbers

b) Rounds a float to the nearest integer

c) Formats a number

d) Converts a number to float

Answer:

a) Finds the modulus of two numbers

Explanation:

fmod() returns the floating-point remainder (modulus) of the division of the arguments.

7. Which function would you use to format a number with thousands separators in PHP?

a) number_format()

b) format_number()

c) sep_number()

d) thousands_sep()

Answer:

a) number_format()

Explanation:

number_format() is used to format a number with grouped thousands.

8. How do you calculate the natural logarithm of a number in PHP?

a) log()

b) ln()

c) logn()

d) natural_log()

Answer:

a) log()

Explanation:

The log() function is used to calculate the natural logarithm of a number.

9. What is the purpose of the PHP function ceil()?

a) Rounds a number down to the nearest integer

b) Rounds a number up to the nearest integer

c) Rounds a number to a specified number of decimal points

d) Finds the ceiling value of a number

Answer:

b) Rounds a number up to the nearest integer

Explanation:

ceil() rounds a number up to the next highest integer.

10. Which function in PHP is used to get the highest value in an array?

a) max()

b) min()

c) highest()

d) top()

Answer:

a) max()

Explanation:

The max() function is used to find the highest value in an array.

11. What is the result of the PHP code intval(12.99)?

a) 12

b) 13

c) 12.99

d) Error

Answer:

a) 12

Explanation:

intval() converts a float into an integer by truncating the decimal part.

12. How do you calculate the cosine of a number in PHP?

a) cos()

b) cosine()

c) cosh()

d) acos()

Answer:

a) cos()

Explanation:

The cos() function is used to calculate the cosine of a number.

13. What is the purpose of the PHP function floor()?

a) Rounds a number up to the nearest integer

b) Rounds a number down to the nearest integer

c) Rounds a number to a specified number of decimal points

d) Finds the floor value of a number

Answer:

b) Rounds a number down to the nearest integer

Explanation:

floor() rounds a number down to the next lowest integer.

14. Which PHP function is used to calculate the arc tangent of two variables?

a) atan()

b) atan2()

c) tan()

d) atanh()

Answer:

b) atan2()

Explanation:

atan2() function calculates the arc tangent of two variables y and x.

15. How do you find the smallest value in an array of numbers in PHP?

a) smallest()

b) min()

c) lower()

d) least()

Answer:

b) min()

Explanation:

The min() function is used to find the smallest value in an array of numbers.