Show that 5×6×7×8+6 and 1×2×3×4×5+5 are composite numbers.
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in 5*6*7*8+6 , 6 is common . so it is not prime number it is composite.
similarly in 1*2*3*4*5+5, 5 is common
similarly in 1*2*3*4*5+5, 5 is common
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