1. | Value of H ? | |||

(a) 5 | (b) 6 | (c) 7 | (d) 8 |

2. | Which of the following set contains even numbers only ? | |||

(a) H, M, K | (b) A, V, E | (c) N, X, W | (d) H, A, N |

3. | Value of N ? | |||

(a) 6 | (b) 7 | (c) 8 | (d) 9 |

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846*537

can anybody explain this.

In the question you can see that X+X=A and M is written as it is at last which means that there is no carry generated from X+X

This implies A is not greater than 9 and as X+X=A thus possible values of X could be {1,2,3,4} . X will not be 5 as 5+5=10 which would generate a carry.

Now use the possible values of X to began hit and trail on HMK×E cause it gives ANXX as a product.