exam Maths Puzzle Numerical Ability

every time I answered equation I am confused with the sigh the that solver used. can you please tell me the proper procedure of solving equation.. do I use addition or subtraction?

Read Solution (Total 0)

exam Other Question

Find the quotient and the remainder

(x^4-2x^2+3)/(x+1) Solve for n.
35. P(n,4) = 40[P(n-1,2)]

36. P(n,4) = 3[P(n,3)]

37. n[P(5,3)] = P(7,5)]

38. 208P(n,2) = P(16,4)

how exactly do you solve for n? please and thank you.