The solutions for the following expressions are:
1. 0.5*2 = 1
2. -0.2+-0.05= -0.25
3. absolute value of (-3+2.75) = 0.25
4. -(-0.25) = 0.25
5. 2x-1.75x = 0.25x
The expression equivalent to 0.25 is numbers 3 and 4.
Depends on if you think it is bbg
Answer:
Step-by-step explanation:
√9=3
√16=4
subtracting 1
√9 -1=3-1=2
√(16) -1=4-1=3
so √13-1 lies between 2 and 3
so 2<√13-1<3
2.
∛40≈3.42
3^3=27
4^3=64
as 27<40<64
∛27-1<∛40-1<∛64-1
or 3-1<∛40-1<4-1
or 2<∛40-1<3
3.
2³=8
3³=27
so ∛8<∛25<∛27
2+2<∛25+2<3+2
4<∛25+2<5
4.
10²=100
11²=121
111 lies between 100 and 121
√100-4<√111-4<√121-4
10-4<√111-4<11-4
6<√111-4<7
5.
109 lies between 100 and 121
√100<√109<√121
10-1<√109-1<11-1
9<√109-1<10
6.
5²=25
6²=36
30 lies between 25 and 36
√25+5<√30+5<√36+5
5+5<√30+5<6+5
10<√30+5<11
4<√30-1<5
As, order is important so we use permutation,
total no. of students= n=8
selected students= r=3
nPr= n!/(n-r)! = 8!/(8-3)! =336 different ways