Question

If 123 × 23 = 2829, then the value of 0.123 × 2.3 is

Answer 1

Step-by-step explanation:

Given that, 1

3

+2

3

+....+10

3

=3025

Now, 2

3

+4

3

+....+20

3

=2

3

(1+2

3

+....+10

3

)=8×3025=24200.

Answer 2

Answer:

0.2829

Step-by-step explanation:

123 × 23 = 2829

0.123 × 2.3 = 0.2829

While multiplying 0.123 and 2.3 , just forget about the points given. Just multiply 123 × 23 , if which the answer will be 2829. Now count the no. of digits after points in both numbers , i . e. 123 in 0.123 and 3 in 2.3. So total digits after point are 4. So from right hand side count four nos. and put a point before. Hence you get the answer.