Integers Test

Result

Integers Test - 1

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The value of (-8) x (-7) x (-6) x (-5) x (-4) x 0 + 0 x (4) x (5) x (6) x (7) x (8) is:

A
0

B
1

C
2

D
3

Solution

(-8) x (-7) x (-6) x (-5) x (-4) x 0 + 0 x (4) x (5) x (6) x (7) x (8)
= 0 + 0
= 0
Question 2
1 / -0

Directions For Questions

Read the following statements and choose the correct option accordingly.

...view full instructions

Statement 1: A perfect number is a positive integer that is equal to the sum of its proper positive factors, that is, the sum of its positive factors excluding the number itself.

Statement 2: 6 and 28 are perfect numbers.

(a) Statement 1 is true, but statement 2 is false.

(b) Statement 1 is false, but statement 2 is true.

(c) Both the statements are true.

(d) Both the statements are false.

A
(a)

B
(b)

C
(c)

D
(d)

Solution

Statement 1: A perfect number is a positive integer that is equal to the sum of its proper positive factors, that is, the sum of its positive factors excluding the number itself.

Statement 2: The first perfect number is 6. Its factors are 1, 2 and 3 and 1 + 2 + 3 = 6.

Similarly, 28 is a perfect number: 28 = 1 + 2 + 4 + 7 + 14.