২৩২৭১
If 15 men working at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men manufacture in 40 minutes?
উত্তর
54
২৩২৭২
The width of a rectangular field is 1/3 times its length. What is the area of the field if the length of the field is 120 yards?
উত্তর
4,800 square yards
২৩২৭৩
If x is an odd integer and y an even integer which of the following statements is (are) alwayes true? 1. x+y is odd 2. xy is odd 3. 2x+y is even
উত্তর
1 and 3 only
২৩২৭৪
If the product of 3 consecutive integers is 120, then the sum of the integers is:
উত্তর
15
সমাধান
Let the first integer be x - 1. Then the next two integers would be x and x + 1. So:
(x - 1)× x × (x + 1) = 120
= > (x² - 1)x = 120
= > x³ - x = 120
∴x = 5 , Check 5³ - 5 = 125 - 5 = 120.
So, x = 5. The other two numbers are 4 and 6 which are equal to x - 1 and x + 1 respectively.
Now the total of these numbers is 3x = 3×5 = 15.
২৩২৭৫
If one number exceeds another number by 13 and the larger number is 3/2 times the smaller number, then the smaller number is:
উত্তর
26
সমাধান
If we assume the smaller number to be n,
Then the larger number = 3n/2
As the larger number is 13 more than the smaller number, we can say
(3n/2) - n = 13
Or, (n/2) = 13
Or, n = 26
২৩২৭৬
If the length of each of the sides of three square plots is increased by 50 percent, how much does the watch gain in one day?
উত্তর
125%
২৩২৭৭
A watch gains 7 minutes and 6 seconds every 6 days. if the rate of gain is constant, how much does the watch gain in one day?
উত্তর
1 min 11 sec
সমাধান
Here, 7 min 6 sec = 7×60 + 6 sec = 426 sec
The clock in 6 days gains = 426 sec
So, the clock in 1 day gains = 426/6 = 71 sec = 1 min 11 sec
২৩২৭৮
In a school election with three candidate, Abdul got 120 votes, Luna got 50 votes and Karim got 30 vote. What percentage of the total number of votes did Abdul get?
উত্তর
60%
সমাধান
Abdul gets = 120 / (120 + 50 + 30) × 100% = 60%
২৩২৭৯
How many times in a day, the hands of a clock are straight?
উত্তর
48
সমাধান
Hints: প্রতি ঘন্টায় দুইবার ঘন্টা এনং মিনিটের কাটা Straight হয় যেমন ১২.০০ টায় একবার এবং ১২.৩০ এ আরেকবার, ২৪ ঘন্টায় তাহলে ৪৮ বার।
২৩২৮০
The number of girls in a class is 5 times the number of boys. Which of the following can not be the total number of children in the class?
উত্তর
35
সমাধান
Hints: এটি Ans দেখে solve করতে হবে boy এর সংখ্যা b এবং girl এর সংখ্যা 5b এখন 5b + b = 6b
এখানে, 35 কে 6 দিয়ে নি:শেষে ভাগ করা যায় না। কাজেই সঠিক উত্তরঃ 35