" Explain that "7times11times13+13" And "7times6times5times4times3times2times1+5" Why are there numbers? "

Explain Why 7times11times13times+13 and 7times6times5times4times3times2times1times+5 are composite number.

Explain why (7 times 11 times 13)+13 " and " (7 times 6 times 5 times 4 times 3 times 2 times 1)+5 are composite numbers.

Express the following in exponential form: (i) "6 times 6times6 times 6 (ii) t times t (iii) b times b times b times b times b times b (iv) 5 times 5times7 times 7times7 (v) "2 times 2times a times a (vi) a times a times a times c times c times c times c times d times 1

Evaluate: (-3) times (-4) times (-5) times (-6) times 7

(6^(3)times7^(4)times8^(5))/(4^(3)times9^(2)times16)

Show : ( -5/2 times -7/4 ) times 1/3 = -5/2 times ( -7/4 times 1/3 )

Evaluate : 2/5 times 3/7 - 1/6 times 3/2 + 1/4 times 2/5 =

Simplify -(2)/(3)times5(1)/(2)times2times7(5)/(6)times(9)/(11)

Solve : 2/3 times 5/7 + 1/4 times 3/7 - 7/3 times 1/4 = ?