3 Digit Numbers

Q.

A number is multipled by 4 then diminished by 7 what is the number ???

Q.

Write the generalised form of 1376

1. $1\times 1000+7\times 100+6\times 10+3$

2. $1\times 1000+3\times 100+7\times 10+6$

3. $3\times 1000+1\times 100+7\times 10+6$

4. $6\times 1000+3\times 100+1\times 10+7$

Q.

$25$ and $40$ are divisible by $5$ . Check whether $5$ is divisible by the sum and difference of the two numbers .

Q.

What will be the ${100}^{th}$term of the series having the generalised formula $6x+2$.

Q.

1.62x+15.4=10

Q.

Express 0.6+0.7bar+0.47bar in the form of p/q where p and q are integers and q not = 0?

Q.

Soham took a 3 digit number and formed two other 3 digit numbers using the digits of the original number in different places. He then added the three resulting numbers and divided their sum by 37 . He concluded that the result was exactly divisible by 37, no matter what number he chose. Is Soham's statement true or false?

1. False

2. True

Q.

If the 1st (Hundred's place), 2nd(Ten's place) and 3rd(Unit's place) digits of a 3-digit number are taken as x , y and z respectively,

how do we write the general form of the number when it is reversed?

1. 100x + 10y + z

2. 100z + 10y + x

3. 100x + 10z + y

4. 100y + 10z + x

Q.

ABC is a 3-digit number and A - C = 2. The difference beween ABC and the number obtained by reversing its digits is ______.

1. 99
2. 198
3. 199
4. 98

Q.

a $\times$ 1000 + p $\times$ 100 + e $\times$ 10 + l is written in the form

1. pael

2. elap

3. apel

4. abcd

Q.

Take a 3 digit number 'abc'. If we add abc, cab and bca together then the resulting sum is divisible by:

1. 11

2. 111

3. 37

4. 111 and 37

Q.

The usual form of $100\times 7+10\times 5+6$ is

1. 756

2. 657

3. 675

4. 567

Q.

Generalised form of a three-digit number abcis

1. 100a + 10b + c

2. 100a + 10c + b

3. a + 10b + 100c

4. a + b + c

Q.

Write 908 in expanded form.

1. $({10}^2\times 9)+({10}^1\times 0)+({10}^0\times 8)$

2. $({10}^2\times 9)+({10}^1\times 8)$

3. $({10}^3\times 9)+({10}^1\times 0)+({10}^0\times 8)$

4. $({10}^3\times 9)+({10}^2\times 0)+({10}^1\times 8)$

Q. General algebraic form of a three digit number pqr is:

1. 3p + 2q + r
2. 100p+ 10q +r
3. 100p+ 10r +q
4. 2p + 1q + r