Mental Math Quiz - 4


ISSB Intelligence Test
1. Click the correct answer. Do not use a calculator: 55 - 33 = 24 - ?

   

   
ISSB Intelligence Test
2. Three of the following numbers add up to the number 31: 17, 4, 2, 19, 5?

   
3. What is 10% of 10?

   

   
ISSB Intelligence Test
4. The average of four numbers is 7. If the average of first three numbers is 8 then find the fourth number?

   

   
ISSB Intelligence Test
5. What is the loss in percent, if a book costing Rs.110 is sold for Rs.100?

   

   
ISSB Intelligence Test
6. If 6 men can do a work in 20 days, how many days will 8 men take?

   

   
ISSB Intelligence Test
7. What is 90% of 90?

   

   
ISSB Intelligence Test
8. A Father is twice as old as his son. Sum of their ages is 60 years. Find the age of father?

   

   
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