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ক্রমান্বিত প্রশ্ন সেট
1 A student loses 1 mark for every wrong answer and scores 2 marks for every correct answer . If he answers all the 60 questions in an exam and scores 39 marks , how many of them were correct ?
33
31
27
37
2 If sin A + sin2A=1, then the value of the expression cos2A + cos4A is ___
1
1/2
2
3
3 কোন ত্রিভুজের তিনটি বাহুকে বর্ধিত করলে উৎপন্ন বহিঃস্থ কোণ তিনটির সমষ্টি কত?
১৮০°
২৭০°
৩৬০°
৫৪০°
4 Alam sold an item for Tk.6,384 and incurred a loss of 30%. At what price should he have sold the item to have gained a profit of 30%?
tk.14656
tk.11856
tk.13544
None of these
5 If 1 -2x ≤ 3, then ___
x ≥ -1
x ≤ -1
x ≤ -2
x ≥ -2
6 What is the difference of largest and smallest prime number between 60 and 80 ?
8
12
18
140
7 A train 240 m long passed a pole in 24 seconds . How long will it take to pass a platform 650 m long ? __
65 s
89 s
100 s
130 s
8 The price of a certain DVD is discounted by 10% and the reduced price is then discounted by 10%. This series of successive discounts is equivalent to a single discount of
20%
19%
18%
11%
10%
9 What is the next number in the series 1,4,9,16 —?
18
21
23
25
31
10 What will be the result of the formula = Max (Average (B1, B2), Product (B3 : B4)) where the value of B1 = 26, B2 =30, B3 =12 and B4 2
28
24
26
672