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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
- The scientific n5×1010 C. 1.05×103 D.1.05×109 E. 1.05×104
- 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 - Which of the following is (are) true?
A.log〖(xy) 〗=logx + logy B. (logx )^n = n logx C. log_101=0
D.log_xx=1 E.log(x/y)= logx-logy - Which of the following is (are) true?
1.logM/logN =logM-logN 2.log∛M=3 logM 3.log_√aM =2log_aM
A. 1 only B. 2 only C. 3 only D. 1 and only E. None of them
6.Which of the following is (are) true?- log_4x=2log_16x 2. log_bx=3 log_(b^3 )x 3. log_416= log_164
A. 1only B. 2 only C. 3 only D. 1 and 2 only E. 1 and 3 only
- log_4x=2log_16x 2. log_bx=3 log_(b^3 )x 3. log_416= log_164
- 〖10〗^(1+log_103 )=……..
A.3 B.30 C. 3/10 D.10/3 E.15
8.(4)^log_23 =……..
A.3 B.-6 C.9 D.12 E.15 - log_35× log_2527=………….
A.3/2 B.2/3 C.5/27 D.3/25 E. 5×27
10.If x=log_ba,y=log_cb,z=log_ac, then xyz=…………
A. 0 B. 1 C.-1 D. abc E. a+b+c - If log2=a, then =…….
A.a^2 B.2.5a C.1+a