Integers Test

Result

Integers Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

An elevator descends into a mine shaft at the rate of 8 m/min. If the descend starts from 12 m above the ground level; how7 long will it take to reach−468 m?

A
60 mins

B
30 min

C
50 mins

D
10 mins

Solution

Total distance covered from A to C =12+468=480m Speed=8 m/min ∴ Time =Total distance covered/Speed =480/8=60minute
Question 2
1 / -0

Which of the following is the multiplicative identity in the set of integers?

A
1

B
(−1)

C
0

D
(−10)

Solution

1 is the identity element with respect to multiplication.
Question 3
1 / -0

Which of the following is true with respect to −28 and −32?

A
−28<−32

B
−28=−32

C
−32>−28

D
−28>−32

Solution

-28>-29>-30....>-32
Question 4
1 / -0

If a and b are integers and a≠b, then which of the following is INCORRECT ?

A
a+b=b+a

B
a−b=b−a

C
a+0=0+a=a

D
a−0=a≠0−a
Question 5
1 / -0

What is the nature of the product of a negative number by itself even number of times?

A
Negative

B
0

C
Positive

D
Non-negative

Solution

(−1)×(−1)×(−1)....even times =1,which is positive.
Question 6
1 / -0

What will be the sign of the product if we together multiply 199 negative integers and 10 positive integers?

A
Negative

B
Positive

C
Can't say

D
Data is insufficient

Solution

Product of odd number of negative integers is always negative and product of even number of negative integers is always positive. ∴ (Product of 199 negative integers) ×(Product of 10 positive integers) = negative × positive = negative
Question 7
1 / -0

The absolute value of −28+12+42−63 is

A
37

B
−36

C
145

D
−145

Solution

We have, |−28+12+42−63| =|−91+54|=|−37|=37
Question 8
1 / -0

How is the withdrawal of RS. 200 represented?

A
Depositing Rs. 200

B
−Rs. 200

C
Rs. 200

D
−200

Solution

Withdrawal is taking out money.

withdrawal of RS. 200= Amount -200

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Re-Attempt Weekly Quiz Competition

Integers Test - 6

Result

Integers Test - 6

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SHARING IS CARING

Question 1

60 mins

30 min

50 mins

10 mins

Solution

Question 2

1

(−1)

0

(−10)

Solution

Question 3

−28<−32

−28=−32

−32>−28

−28>−32

Solution

Question 4

a+b=b+a

a−b=b−a

a+0=0+a=a

a−0=a≠0−a

Question 5

Negative

0

Positive

Non-negative

Solution

Question 6

Negative

Positive

Can't say

Data is insufficient

Solution

Question 7

37

−36

145

−145

Solution

Question 8

Depositing Rs. 200

−Rs. 200

Rs. 200

−200

Solution

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