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6 + 7 = 3447, 7 + 8 = 4762 ആയാൽ 8 + 9 = ?

A6279

B6380

C6178

D6280

Answer:

A. 6279

Read Explanation:

6 + 7 = (6x6)-2,(7x7)-2 8 + 9 = 64-2,81-2 8 + 9 = 6279


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If 2 @ 3 = 25 and 3 @ 4 = 49, what is 4 @ 5?
Eight people are sitting in two parallel rows containing 4 people each in such a way that there is equal distance between adjacent persons. In row 1, D, E, O and S are seated and all of them are facing south. In row 2, F, A, R and M are seated and all of them are facing north. Thus each person faces another person from the other row. Only one person sits between A and F. Only one person sits between D and O. Which of the following represents both people facing each other ?
If 16 = 11, 25 = 12, 36 = 15, then 49 = ?