Question

answer these questions please

Answer 1

1abcde X 
3 = 
-------------- 
abcde1 

using this table mode makes the problem easier to look at. 

you can see 3 X e = something ending in 1, only one digit does that and that is 7 

So now we have 

1abcd7 X 
3 = 
-------------- 
abcd71 

So now we have the 3x7 = 21 the 2 carries, so 3Xd +2 = something that ends in 7, therefore 3Xd equals something ending in 5, therefore d = 5 so now we have. 

1abc57 X 
3 = 
-------------- 
abc571 

3X5 = 15 so carry the 1 and 3Xc+1 is something that ends in 5 therfore 3Xc ends in 4, therefore c is 8, so now we have 

1ab857 X 
3 = 
-------------- 
ab8571 

3x8 = 24 so carry the 2, so 3Xb+2 is something that ends in 8 therefore 3Xb ends in 6 so b is 2, so now we have 

1a2857 X 
3 = 
-------------- 
a28571 

3x2 = 6, no carry, so 3Xa ends in 2 thus a is 4 so we now have 
142857 X 
3 = 
-------------- 
428571 

So abcde is 42857

Answer 2

E. Go through the attachment. 

G. Have a look at International Numeration system.

Ones = 1

Ten = 10

Hundred = 100

Thousand = 1,000

Ten Thousand = 10,000

Hundred Thousand = 100,000

Million = 1,000,000

Ten Million = 10,000,000

Hundred Million = 100,000,000

Billion = 1,000,000,000

Ten Billion = 10,000,000,000

Hundred Billion = 100,000,000,000.

Now divide a Billion by a Million = 1,000,000,000 ÷ 1,000,000

                                                   = 1,000.

 ∴ There is 1,000 million in 1 Billion.

H. Soni got 5 gold medal and 2 silver medal last year . How many medals did Soni get last year ?