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Numerical Ability
Log and Antilog
If log 0.318=0.3364 and log 0.317=0.33320 then log 0.319 =?
a) 0.33365
b) 0.3368
c) 0.3396
d) 0.3369
Read Solution (Total 9)
-
- i will explain the logic
log 0.318 / log 0.317 = log (0.318 - 0.317) = log 0.001 = 0.3364 / 0.33320 = 1.0096
now,
log 0.318 * log 0.001 = log (0.318 + 0.001) = log 0.319 = 0.3364 * 1.0096 = 0.3396
so option c - 10 years agoHelpfull: Yes(20) No(4)
- log 0.319=log0.318+(log0.318-log0.317) = 0.3396
- 10 years agoHelpfull: Yes(13) No(4)
- log 0.318/log0.317=log0.319/0.318
so ans is 0.3396 - 10 years agoHelpfull: Yes(4) No(3)
- i will explain the logic
log 0.318 / log 0.317 = log (0.318 - 0.317) = log 0.001 = 0.3364 / 0.33320 = 1.0096
now,
log 0.318 * log 0.001 = log (0.318 + 0.001) = log 0.319 = 0.3364 * 1.0096 = 0.3396
so option c
Read more at http://www.m4maths.com/40704-If-log-0-318-0-3364-and-0-317-0-33320-then-log-0-319-a-0-33365-b-0.html#at_pco=cfd-1.0&at_ab=per-2&at_pos=0&at_tot=23&at_si=55b68c60668e4cf3#qK1WX0Dbj2qphZ7A.99 - 9 years agoHelpfull: Yes(1) No(0)
- c)0.3396
for log0.001 increase value increase is 0.0032 so the answer is (0.3332+0.0032) 0.3396. - 9 years agoHelpfull: Yes(1) No(0)
- Ankit explain me how??
- 10 years agoHelpfull: Yes(0) No(3)
- ankit please explain in detail
- 10 years agoHelpfull: Yes(0) No(0)
- log 0.319=log0.318+(log0.318-log0.317) {(log0.318-log0.317)...here diference btwn 0.318 and 0.317 is equals to 0.319 and 0.318}
ans; 0.3396 - 10 years agoHelpfull: Yes(0) No(0)
- log 0.317=0.3332 & log 0.318=0.3364
now,
last two digits of 0.3332 is 32 & last two digit of 0.3364 is 64 so if we multiply 32 by 2 then we get 64
so as well if we multiply 32 by 3 then we get 96
so log 0.319 = 0.3396 (Ans)
so option c is the right ans - 4 years agoHelpfull: Yes(0) No(0)
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