kyarmoommar

1. If [2/3]^(x+3) = [8/27]^2, then x is equal to…..
   A.2 B.3 C.5 D.8 E.9
2. If 312x+1 . 3x+4= 99, then x=……….
   A.4 B.5 C.6 D.7 E.1
   4.√288 + √200 + √392 =……..
   A.20√2 B.16√2 C.10√2 D.8√2 E.4√2

Logarithms

1. If the number 31200 is put in the form 3.12 ×10n, the value of n is
   A. 1 B. 2 C. 2 D. 4 E. 5
2. The scientific notation 3.5 ×103 multiplied by 3 is
   A. 1.05 ×102 B.1.05×1010 C. 1.05×103 D.1.05×109 E. 1.05×104
3. The scientific notation 8.2×10-4 + 5.4×10-4=………
   A.1.35×10-5 B. 1.36×10-4 C.1.36×10-3 D.1.36×10-7 E.1.36×103
4. Which of the following is (are) true?