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There are 30 cans and out of them only one is poisoned. If a person tastes very little he will die within 14 hours so if there are mice to test and 24 hours, how many mice are required to find the poisoned can?plz solve it asap
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TCS Other Question

2. What is the sum of the squares of the first 20 natural numbers (1 to 20)?

a) 2870

b) 2000

c) 5650

d) 44100
10 years ago, the average age of 10 people was 33 years. After 3 years, a person of age 40 died. After another 3 years, another person of age 40 died. After another 3 years, another person of age 30 dies. Find the present average age.