taungkhan cet

[konaw34]

A. 1 B. 2 C. 2 D. 4 E. 5

1. 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
2. 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
3. Which of the following is (are) true?
   A.log⁡〖(xy) 〗=log⁡x + log⁡y B. (log⁡x )^n = n log⁡x C. log_10⁡1=0
   D.log_x⁡x=1 E.log⁡(x/y)= log⁡x-log⁡y
4. Which of the following is (are) true?
   1.log⁡M/log⁡N =log⁡M-log⁡N 2.log⁡∛M=3 log⁡M 3.log_√a⁡M

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