Knowing our Numbers Test

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Knowing our Numbers Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

The number $$28,549$$ when rounded off to the nearest hundreds is

A
$$28,000$$

B
$$28,500$$

C
$$28,600$$

D
$$29,000$$

Solution

$$28,549$$
The digits at tens place is 4, which is less than 5. Hence, the rounded off number to nearest hundreds$$ = 28,500.$$
Question 2
1 / -0

The smallest natural number which when rounded off to the nearest hundreds as $$500$$ is

A
$$499$$

B
$$501$$

C
$$450$$

D
$$549$$

Solution

The smallest natural number which when rounded off to the nearest hundreds as $$500$$ is $$450.$$
This is so because the digit at tens place is 5, which is equal to 5.
Question 3
1 / -0

The greatest natural number which when rounded off to the nearest hundreds as $$500$$ is

A
$$549$$

B
$$599$$

C
$$450$$

D
None of these

Solution

The greatest natural number which when rounded off to the nearest hundreds as $$500$$ is $$549.$$
This is so because the digit at tens place is $$4,$$ which is less than $$5.$$
Question 4
1 / -0

If $$1$$ is added to the greatest $$7$$-digit number, it will be equal to

A
$$10$$ thousands

B
$$1$$ lakh

C
$$10$$ lakh

D
$$1$$ crore

Solution

The greatest $$7$$-digit number $$=99,99,999$$
$$\therefore 1$$ added to $$99,99,999=99,99,999+1=1,00,00,000$$
Question 5
1 / -0

In Indian System of numeration, the number $$58695376$$ is written as

A
$$58,69,53,76$$

B
$$58,695,376$$

C
$$5,86,95,376$$

D
$$586,95,376$$

Solution

In Indian system of Numeration commas are given at thousand, lakh, crore places starting from right that is unit place side.
So, in Indian System of Numeration, $$58695376$$ can be written as $$5,86,95,376$$.
Hence, option $$C$$ is right
Question 6
1 / -0

Which of the following numbers in Roman numerals is incorrect?

A
$$LXXX$$

B
$$LXX$$

C
$$LX$$

D
$$LLX$$

Solution

$$LLX$$ is incorrect because $$L$$ is repeated according Roman Number $$L$$ can be used exactly once times.

If $$LLX$$ was used to represent $$50+50+10=110$$ then it is correctly represented as $$CX$$
So, Option $$D$$ is right
Question 7
1 / -0

The greatest number which on rounding off to nearest thousands gives $$5000$$, is

A
$$5001$$

B
$$5559$$

C
$$5999$$

D
$$5499$$

Solution

We have to get $$5000$$ in rounding off.
Greatest of such numbers is greater than $$5000$$
Let, the number be $$5abc$$
So, we have to compare its digits except thousandth place$$(5)$$ with $$500$$
So, removing thousand place$$(5)$$ from number we get $$abc$$
So, to round off to $$5000$$:
$$abc<500$$

So, largest number smaller than $$500$$ is $$499$$
So, $$5abc=5499$$
$$\therefore$$ The greatest number which on rounding off to a nearest thousand gives $$5000$$, is $$5499$$.
Option $$D$$ is correct.
Question 8
1 / -0

Keeping the place of $$6$$ in the number $$6350947$$ same, the smallest number obtained by rearranging other digits is

A
$$6975430$$

B
$$6043579$$

C
$$6034579$$

D
$$6034759$$

Solution

We, have to keep $$6$$ at its place , so we remain with $$350947$$
To make smallest number from these we have to rearrange them in ascending order.
$$0<3<4<5<7<9$$
So, $$350947$$ rearrnges to $$034579$$
So, new number formed $$=6034579$$
Hence, Option $$C$$ is right
Question 9
1 / -0

When rounded off to nearest thousands, the number $$85642$$ is

A
$$85600$$

B
$$85700$$

C
$$85000$$

D
$$86000$$

Solution

We have to round off to nearest thousand,
$$\therefore$$ thousandth place =$$5$$
places before that =$$642$$
Now, $$642>500$$
So, we will add $$1$$ to thousandth place and write zeros in place of above three digits.
So, ner thousandth place$$=5+1=6$$
$$\therefore$$ Round off is $$86000$$
Hence, Option $$D$$ is right.
Question 10
1 / -0

One million is equal to

A
$$1$$ lakh

B
$$10$$ lakh

C
$$1$$ crore

D
$$10$$ crore

Solution

One Million $$=1,000,000$$
With Indian system of Numeration
$$1,000,000=10,00,000=10\text{lakh}$$
Hence, option $$B$$ is right

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Re-Attempt Weekly Quiz Competition

Knowing our Numbers Test - 25

Result

Knowing our Numbers Test - 25

Score

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Rank

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SHARING IS CARING

Question 1

$$28,000$$

$$28,500$$

$$28,600$$

$$29,000$$

Solution

Question 2

$$499$$

$$501$$

$$450$$

$$549$$

Solution

Question 3

$$549$$

$$599$$

$$450$$

None of these

Solution

Question 4

$$10$$ thousands

$$1$$ lakh

$$10$$ lakh

$$1$$ crore

Solution

Question 5

$$58,69,53,76$$

$$58,695,376$$

$$5,86,95,376$$

$$586,95,376$$

Solution

Question 6

$$LXXX$$

$$LXX$$

$$LX$$

$$LLX$$

Solution

Question 7

$$5001$$

$$5559$$

$$5999$$

$$5499$$

Solution

Question 8

$$6975430$$

$$6043579$$

$$6034579$$

$$6034759$$

Solution

Question 9

$$85600$$

$$85700$$

$$85000$$

$$86000$$

Solution

Question 10

$$1$$ lakh

$$10$$ lakh

$$1$$ crore

$$10$$ crore

Solution

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