Whole Numbers Test

Result

Whole Numbers Test - 7

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Weekly Quiz Competition

Question 1
1 / -0

There are 222 red balls in a basket. A boy takes out 6 red balls from it and replaces them by 12 white balls. He continues to do so, till all red balls are replaced by white balls. Then the number of white balls put in the basket is __________.

A
333

B
444

C
345

D
400

Solution

Let n be the number of steps. According to question, 222−6×n = 0 ⇒ 6n = 222 ⇒ n = 2226 = 37 Now, number of white balls added in one step = 12 ∴ Number of white balls added in 37 steps =12×37=444
Question 2
1 / -0

Which of the following statements is NOT true?

A
Every whole number has a successor.

B
Every whole number has a predecessor.

C
0 is the least whole number.

D
Every natural number is a whole number.

Solution

0 has not any predecessor,
Question 3
1 / -0

Which of the following set of numbers will make the number sentence true? ____÷____+____= 12

A
(6, 8, 12)

B
(6, 8, 16)

C
(16, 8, 10)

D
(6, 8, 10)

Solution

(a) 6÷8+12=12.75 (b) 6÷8+16=16.75 (c) 16÷8+10=12 (d) 6÷8+10=10.75
Question 4
1 / -0

The successor of 100199 is

A
100198

B
900109

C
100200

D
100991

Solution

The successor of 100199 =100199 + 1 = 100200
Question 5
1 / -0

Which is the whole number that does not have a predecessor?

A
100

B
0

C
1

D
9

Solution

0 does not have a predecessor.