IBM Company Numerical Ability Averages

Average of a couple 10 years ago was 25. The average remains same after having a child and twins after 3 years. What is the present age of the first child.

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IBM Other Question

There are 100 people in an organization. If 46 people can speak English, 46 Spanish, 58 French, 16 can speak both English and Spanish, 24 can speak both Spanish and French, 26 both English and French and 7 can speak all the languages. How many are there who cannot speak any of the three languages. A school is going to have 1000 students in near future. 1/4th use scooter, 1/5th use bikes and 1/9th use cycle. Find the number of students at present.