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9.	Which 5 numerals will add up to 1,000?

Answer

Ans = 416 + 373 + 126 + 64 + 21 = 1,000.

10.	What number should replace the question mark?

Answer

Ans = 5. Look at diagonal lines from bottom right hand corner to top. The bottom and third digits multiplied together produce the number formed by the second and top digits. So 5 x 7= 35. Similarly 3x8 = 24, 9x4 = 36 and 7 x 6 = 42.