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1) What will come in place of the question mark (?) in the following question ? 52.5% of 800 + 30.5% of 2800 = ? + 87.30
No Explanation found. Add Explanation and get +2 points.
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2) The length of the room is 5.5m and width is 3.75m. Find the cost of paving the floor by slabs at the rate of Rs.800 per sq meter
No Explanation found. Add Explanation and get +2 points.
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3) The diluted wine contains only 8 liters of wine and the rest is water. A new mixture whose concentration is 30%, is to be formed by replacing wine. How many liters of mixture shall be replaced with pure wine if there was initially 32 liters of water in the mixture ?
No Explanation found. Add Explanation and get +2 points.
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4) When four fair dice are rolled simultaneously, in how many outcomes will at least one of the dice show 3?
Explanation :
When 4 dice are rolled simultaneously, there will be a total of 6 x 6 x 6 x 6 = 1296 outcomes.
The number of outcomes in which none of the 4 dice show 3 will be 5 x 5 x 5 x 5 = 625 outcomes.
Therefore, the number of outcomes in which at least one die will show 3 = 1296 – 625 = 671
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5) Select the correct set of symbols which will fit in the given equation? 5 0 3 5 = 20
No Explanation found. Add Explanation and get +2 points.
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6) In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is
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7) A, B, C subscribe Rs. 50,000 for a business, A Subscribes Rs. 4000 more than B and B Rs. 5000 more thanC. Out of a total profit of Rs. 35,000, A receives
Explanation :
Let C = x. Then, B = x + 5000 and A = x + 5000 + 4000 = x + 9000.
So, x + x + 5000 + x + 9000 = 50000 <=> 3x = 36000 <=>
x = 12000.
A : B : C = 21000 : 17000 : 12000 = 21 : 17 : 12.
A's share = Rs. (35000 * 21/50 ) = Rs. 14,700.
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8) The area of a square is 30.25 cm². Find its perimeter (in cm)
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9) What is the effective resistance (in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?
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10) When an object travels equal distances in equal intervals of time, it moves with ______________ speed.
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