Tag: maths

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Questions Related to maths

Multiple choice maths decimal fraction multiplying decimals multiplication of decimals multiplication of division of decimal fraction by whole number and decimal fraction

Find the value of $x$
$83^{27.3}\div 83^{1.4}\times 83^{46.8}=83^{31.9+x}$

  1. $64.1$
  2. $41.9$
  3. $40.8$
  4. $39.1$

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Consider L.H.S
$83^{27.3}\div 83^{1.4}\times 83^{46.8}$
$=(83)^{27.3-1.4+46.8}=(83)^{72.7}$
$\Rightarrow 31.9+x=72.7$
$\Rightarrow x=72.7-31.9=40.8$.

Multiple choice maths decimal fraction multiplying decimals multiplication of decimals multiplication of division of decimal fraction by whole number and decimal fraction

Solve the following:
$11.2\times 0.10$


Ans : $1.12$

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$11.2 \times  0.10$

Step I: $112 \times  10=1120$

Step II: Total number after decimal point $= 1 + 2 = 3$

So, we put a decimal point after three places from the right

$11.2 \times 0.10 = 1.120$

$= 1.12$