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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
উত্তর : A.
Sat May 03 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
সম্পর্কিত প্রশ্ন সমূহ
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
How many cases do you need if you have to pack 112 pairs of shoes into cases that each hold 28 shoes ?
A.
8
B.
10
C.
12
D.
14
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
siddik has a new set of golf clubs . using a club 8,7, and 6 ball travels an average distance of 100 m, 108 m, 114 m, respectively , How far will the ball go if he uses a club 5 ?
A.
122m
B.
120m
C.
118m
D.
116m
If $\sin A + \sin^2 A = 1$, then the value of the expression $\cos^2 A + \cos^4 A$ is ___
A.
1
B.
Thu Jan 02 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
C.
2
D.
3
At the end of a banquet 10 people shake hands with each other . How many handshakes will be in total?
A.
100
B.
20
C.
45
D.
90