Question
A student multiplied a number by 8/5 instead of 5/8.
What is the percentage error in the calculation?Solution
Let the required number = (LCM of denominator 5 and 8) = 40 According to the question, Wrong answer = 8/5 × 40 = 64 Correct answer = 5/8 × 40 = 25 Required percentage of error = (64-25)/25 × 100 = 156%
Find which figure is to be removed so that all, starting from I, fit into a pattern.
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
42 * 27 * 3 * 84 * 2 * 3
Vinita, Anita, Preeti and Kunjan are dining around a square table facing the centre. Each friend is sitting at the middle of one of the four sides. Kunj...
Select the option that is related to the third term in the same way as the second term is related to the first term:
DART : XGLZ : : SPIN :?
Select the figure from among the given options that can replace the question mark (?) in the following series.
Which two signs should be interchanged to make the given equation correct?
17 × 3 ÷ 6 − 2 + 7 = 55
Which two numbers (not the digits of the numbers) and two signs should be interchanged to make the given equation correct?
25 ÷ 12 × 5 – 36...
What should come in place of ? in the given series based on the English alphabetical order?
ICU, FAT, CYS, ZWR, ?
Select the correct option from the following options which could create a full square (3 out of 5 images below):
In a certain code language, 'BEST' is coded as '9715' and 'CLUB' is coded as '8762'.
What is the code for 'B' in the given code language?
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