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# Sample Exam 4 - Infotech Solved Placement Papers by 3i

Details of Sample Exam 4 - Infotech Solved Placement Papers by 3i conducted by 3i for job interview.
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Here are some solved questions from 3i Infotech Placement Papers

1) A person with some money spends 1/3 for cloths, 1/5 of the remaining for food and 1/4 of the remaining for travel. He is left with Rs 100/-
How much did he have with him in the begining?

Answer
Rs. 250/-

2) Grass in lawn grows equally thick and in a uniform rate. It takes 24 days for 70 cows and 60 days for 30 cows to eat the whole of the grass.
How many cows are needed to eat the grass in 96 days?

Answer
20 cows

3) There is a safe with a 5 digit number as the key. The 4th digit is 4 greater than the second digit, while the 3rd digit is 3 less than the 2nd digit. The 1st digit
is thrice the last digit. There are 3 pairs whose sum is 11. Find the number.

Answer
65292

4) Consider a number 235, where last digit is the sum of first two digits i.e. 2 + 3 = 5.How many such 3-digit numbers are there?

Answer
There are 45 different 3-digit numbers.