Advertisements
Advertisements
Question
Tricks with your age.
Write your age ______
Multiply it by 7 ______
Again, multiply the answer by 13 ______
Multiply again that answer by 11 ______
Now, look at your last answer. Can you find your age in that answer?
How many times does your age show in the answer?
Now try this trick with other people.
Advertisements
Solution
Write your age = 10
Multiply it by 7 = 10 x 7 = 70
Again multiply the answer by 13 = 70 x 13 = 910
70
x 13
210 (70 x 3)
700 (70 x 10)
910
Multiplying again that answer by 11 = 910 x 11 = 10010
910
x 11
910 (910 x 1)
9100 (910 x 10)
10010
Yes. I can find my age in final answer, my age appears two times in the answer.
APPEARS IN
RELATED QUESTIONS
Evaluate: 5.897 x 2.3
Evaluate: 4.75 x 0.08 x 3
Evaluate: 0.8 × 1.2 × 0.25
Evaluate: 12.003 × (0.2)5
One traveller incurs a cost of 7,650 rupees for a certain journey. What will be the cost for 26 such travelers?
Use Bela's method to multiply these numbers
- 67 × 18
Do these in your notebook using Bela's method
- 47 × 19
Satish is a 13-year-old boy. His father had taken a loan for farming. But the crops failed. Now Satish’s mother has to pay Rs 5000 every month for the loan.
Satish started working — he looked after 17 goats of the village.
He earns Rupee 1 every day for one goat.
- How much will he earn in one month?
- Does he earn enough to help pay the loan every month?
- How much will he earn in one year?
A company sells 1 litre of packed water for Rs 12. A shopkeeper buys 240 litres of packed water. How much does he pay?
There are 28 laddoos in 1 kg. How many will be there in 12 kg? If 16 can be packed in 1 box, how many boxes are needed to pack all these laddoos?
