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Q
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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Rearrange the following five sentences (A), (B), (C), (D) and (E) in the proper sequence to form a paragraph ; then answer the questions on basis of them. (A) A small wooden nest box is all it has taken to rekindle all the romance of bringing sparrows and other birds back into our cities and halt themfrom fading into the past like a forgotten folktale. (B) There is something wrong with a…
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