Question
In a logic gate, the output is 1 only when at least one
input is 1. This gate is:Solution
An OR gate gives output 1 if at least one input is 1. Only when all inputs are 0, the output is 0. Truth table for OR gate: 
The present ages of a father and son are in the ratio 7 : 2 . After 6 years , the father’s age will be 3 times  the son’s age. What is the fa...
Currently, the average age of individuals 'A' and 'B' is 27 years. If the present ages of 'B' and 'C' maintain a ratio of 10:11, determine the age of 'C...
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The average age of the husband, wife, and their child 4 years ago was 24 years and that of the husband and the child 5 years ago was 19 years. The pres...
- At present, the total of ages of Arjun and Ravi is 60 years. Two years ago, the ratio of their ages was 3:4. What is the current age of Ravi?
The ratio of A’s age to B’s age is 2 : 3. If 6 years are subtracted from each of their ages, the new ratio becomes 3 : 5. Find B'spresent age.
The present age of Surjeet and Rakesh are in the ratio of 4:5. After 8 years the ratio of their ages will be 6:7. What is 70% of the sum of their presen...
