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What will come in place of the question mark (?) in the following questions?(You are not expected to calculate exact values)
(?) × 3.01 = 11.95 × (05.09)2
(?) × 3 = 12 × 25 Or, (?) × 3 = 300 Or, (?) = 300 ÷ 3 = 100 Or, (?) = 100
(?) × (12.01)2 = 15.95 × 09.09
(?) × (12)2 = 16 × 9
Or, (?) × 144 = 144
Or, (?) = 144 ÷ 144 = 1
Or, (?) = 1
What should come in place of question mark (?) in the following questions?
? − 33 = (82 − 12) + (112 − 17)
? – 27 = (64 – 12) + (121 – 17)
? – 27 = 52 + 104
? = 156 + 27 = 183
786 + 432 + 151 = ? + (37)2
1369 = ? + 1369
1369 - 1369 = ?
? = 0
What will come in place of the question mark (?) in the following number series?
4, 6, 8, 9, 10 , 12 ,?
They are consecutive composite numbers so, ? = 14
43, 47, 53, 59, ?, 67
These are consecutive prime numbers so, ? = 61
Prashant can complete a work in 12 days while Vishal can do it in 8 days. Calculate the work left if they work for 4 days each?
In how many ways, a committee of 3 members including at least 2 females can be formed from a group of 5 males and 4 females?
If Committee has 2 females and 1 male, no. of ways = 4C2 × 5C1 = 30
If Committee has 3 females, no. of ways = 4C3 = 4
Total no. of ways = 30 + 4 = 34
The length of a rectangle is 12 units and the breadth is 26 units. What will be the area of the right-angled triangle constructed on which base is equal to the length of rectangle and height is equal to the breadth of the rectangle?
We know that, "The area of the right-angled triangle in a rectangle = 1/2 x the area of the rectangle "
Now, 1212 x the area of the rectangle = 1/2 x base x height
= 1/2 × 12 × 26 = 6 × 26 = 156 square units
Nick's Mathematics test had 76 problems i.e. 20 arithmetic, 25 algebra and 36 geometry problems. Although he answered 40% of the arithmetic, 40% of the algebra and 66.66% of the geometry problems correctly, he did not pass the test because he got less than 75% of the problems right. How many more question he would have needed to answer correctly to earn a 75% passing grade?
Number of questions attempted correctly = (40% of 20 + 40% of 25 + 66.66% of 36 )
⇒ (8 + 10 + 24) = 42
Questions to be answered correctly for 75% grade = 75% of 76 = 57.
So, Required number of questions = (57 – 42) =15
Correct (-)
Wrong (-)
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