Playing with Numbers Test

Result

Playing with Numbers Test - 9

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following numbers are divisible by $$3$$ ?

A
$$111$$

B
$$121$$

C
$$131$$

D
None of the above

Solution

A number is divisible by $$3$$, if the sum of its digits is divisible by $$3$$.
$$\therefore 111 = 1+1+1= 3 $$
$$3$$ is divisible by $$3$$, so option A is correct.
Question 2
1 / -0

Which of the following numbers are divisible by $$2$$ ?

A
$$76$$

B
$$84$$

C
$$64$$

D
All of the above

Solution

Divisibility by 2:
If the number contains an even number (0, 2, 4, 6, 8) in the units place,
then the number is completely divisible by $$2$$.

All the options given here are even numbers i.e $$76$$ ends with $$6$$
$$84$$ and $$64$$ ends with $$4$$

So, option D is correct..
Question 3
1 / -0

A number that has $$0, 2, 4, 6$$ or $$8$$ in its ones place is divisible by ________.

A
$$0$$

B
$$2$$

C
$$4$$

D
$$6$$

Solution

A number that has $$0, 2, 4, 6$$ or $$8$$ in its ones place is divisible by $$2$$.
Example:
$$20$$ is divisible by $$2 = 10$$
$$22$$ is divisible by $$2 = 11$$
$$44$$ is divisible by $$2 = 44$$
$$26$$ is divisible by $$2 = 26$$
$$18$$ is divisible by $$2 = 9$$

So, option B is correct.
Question 4
1 / -0

Which of the following is not divisible by $$10$$ ?

A
$$12$$

B
$$13$$

C
$$14$$

D
All of the above

Solution

For any number to be divisible by $$10$$, it must have $$0$$ at it's unit place.

Hence, no given number is divisible by $$10$$ here.
Question 5
1 / -0

Which of the following number is divisible by $$5 ?$$

A
$$63$$

B
$$65$$

C
$$64$$

D
None of the ablove

Solution

A number is divisible by $$5$$ if it contains $$0$$ or $$5$$ in the units place.
Since only $$65$$ has $$5$$ in the units place, therefore it is divisible by $$5$$.

So, option B is correct.
Question 6
1 / -0

Choose the number divisible by $$2$$.

A
$$12907$$

B
$$23484$$

C
$$12971$$

D
$$34987$$

Solution

We know the divisibility rule for 2:
The number which is divisible by $$2$$ always end with either $$0, 2, 4, 6$$ or $$8$$
$$12,907$$ ends with $$7$$. So, not divisible by $$2$$
$$12,971$$ ends with $$1$$. So, not divisible by $$2$$
$$34,987$$ ends with $$7$$. So, not divisible by $$2$$
But, $$23,484$$ is divisible by $$2$$ because the last digit is $$4$$.
Question 7
1 / -0

Which of the following number is divisible by $$5$$?

A
$$132$$

B
$$456$$

C
$$890$$

D
$$346$$

Solution

A number is divisible by $$5$$ if the last digit ends with $$0$$ or $$5$$.
Here, $$890$$ is divisible by $$5$$ because the last digit ends with $$0$$.
So, option C is correct.
Question 8
1 / -0

Which of the following number is divisible by $$10$$?

A
$$2011$$

B
$$2014$$

C
$$2015$$

D
$$2120$$

Solution

For a number to be divisible by $$10$$ it must end with $$0$$ this is the We know the divisibility rule for $$10.$$

Hence, option $$D$$ is correct.
Question 9
1 / -0

If a number ends with $$0$$ or $$5$$, then the number is divisible by __.

A
$$6$$

B
$$3$$

C
$$7$$

D
$$5$$

Solution

If the last digit of a number ends with $$0$$ or $$5$$, then the number is divisible by $$5$$.
Example: $$120$$ is divisible by $$5$$.
$$255$$ is divisible by $$5$$.
So, option D is correct.
Question 10
1 / -0

Check the numbers which are not divisible by $$2$$.

A
$$341$$

B
$$220$$

C
$$518$$

D
$$454$$

Solution

We know the divisibility rule for $$2$$:
Always check the last digit end with $$0, 2, 4, 6$$ or $$8$$.
Here, $$341$$ is not divisible by $$2$$ because the last digit is end with $$1$$.

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Re-Attempt Weekly Quiz Competition

Playing with Numbers Test - 9

Result

Playing with Numbers Test - 9

Score

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Rank

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SHARING IS CARING

Question 1

$$111$$

$$121$$

$$131$$

None of the above

Solution

Question 2

$$76$$

$$84$$

$$64$$

All of the above

Solution

Question 3

$$0$$

$$2$$

$$4$$

$$6$$

Solution

Question 4

$$12$$

$$13$$

$$14$$

All of the above

Solution

Question 5

$$63$$

$$65$$

$$64$$

None of the ablove

Solution

Question 6

$$12907$$

$$23484$$

$$12971$$

$$34987$$

Solution

Question 7

$$132$$

$$456$$

$$890$$

$$346$$

Solution

Question 8

$$2011$$

$$2014$$

$$2015$$

$$2120$$

Solution

Question 9

$$6$$

$$3$$

$$7$$

$$5$$

Solution

Question 10

$$341$$

$$220$$

$$518$$

$$454$$

Solution

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