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QUESTION
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A number lock consists of 3 rings each marked with 10 different numbers. In how many cases the lock cannot be opened ?
Solution
Each ring has 10 options.Therefore, the total number of cases possible = 10 × 10 × 10 = 103= 1000The lock...
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After 6 years Raja’s father’s age will be twice that of his age and 2 years ago, his mother’s age was twice that of…
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Simple equations are mathematical expressions that involve one or more variables and follow the basic algebraic form. In these equations, the goal is to find the values of the variables that satisfy the given conditions. Simple equations typically consist of addition, subtraction, multiplication, and division operations, making them fundamental to understanding algebraic concepts.
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