maths riddles crossword

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Across
  1. 1. What is the answer of multiply known as
  2. 4. I am a odd number but if you take away one letter I will become odd.
  3. 5. The full form of HCF
  4. 7. If you multiply this number by any other number, the answer will always be the same. What number is this?
  5. 8. Seven boys met each other at a party. Each of them shakes hands only once with each of the other boys. What is the total number of handshakes that took place?
  6. 9. A grandfather, two fathers and two sons went to the movie theater together and everyone bought one movie ticket each. How many tickets did they buy in total.
  7. 10. A man is twice as old as his little sister. He is also half as old as their dad. Over a period of 50 years, the age of the sister will become half of their dad’s age. What is the age of the man now?
Down
  1. 2. I am a three-digit number. My second digit is 4 times bigger than the third digit. My first digit is 3 less than my second digit. Who am I?
  2. 3. Two hens can lay two eggs in two minutes. If this is the maximum speed possible, what is the total number of hen needed to get 500 eggs in 500 minutes?
  3. 6. A mobile phone and its case cost Rs. 110 in total. The price of the mobile phone is Rs.100 more than its case. What is the price of the mobile phone?