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সম্পর্কিত প্রশ্ন সমূহ
If * is defined for all positive real numbers a and b by $a*b=\frac{ab}{a+b}$, then $10*2=?$
A.
Sat May 03 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
B.
Fri May 02 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
C.
5
D.
20/3
If the langth of a rectangle is increased by 20% and width is decreased by 20% what is the change in area of rectangle ?
A.
unchanged
B.
decreased by 4%
C.
increases by 4%
D.
increases by 5%
The dimensions of a box are 2,3 and 4 meters . the cost of painting the outer sides of the box at the rate of tk. 3 per square meter is ___
A.
156
B.
120
C.
136
D.
160
In each expression below , N represents a negative integer . Which expression could have a negative value?
A.
N(square)
B.
6-N
C.
[object Object]
D.
6+N
If the length of rectangle B and the width of rectangle A is one-half the width of rectangle B, what is the ratio of the area of rectangle A to the area of rectangle B?
A.
Sat Jan 04 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
B.
Thu Jan 02 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
C.
Wed Jan 01 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
D.
Sat Feb 01 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
a median of a triangle divides it into two ___
A.
congruent triangles
B.
triangles of equal area
C.
isosceles triangle
D.
right triangle
In a row in the theatre the seats are numbered consecutively from T1 to T50. Sumon is stilling in seat T39 . How many seats are there between them ?
A.
23
B.
21
C.
22
D.
20