Examples for secondary school students
Number of problems found: 2028
- Find the 12
Find the equation of the circle with center (3,7) and circumference 8π units.
- Same area
There is a given triangle. Construct a square of the same area.
- Insert 7
Insert five harmonic means between 3 and 18
- Reciprocal value
How do I calculate a number x that is 9 greater than its reciprocal (1/x)?
- Olympics metals
In how many ways can be win six athletes medal positions in the Olympics? Metal color matters.
- Percentage increase
Increase number 400 by 3.5%
The city has 7 fountains. Works only 6. How many options are there that can squirt ?
Express the expression ? as the n-th power of the base 10.
From which law follows directly the validity of Pythagoras' theorem in the right triangle? ?
Can the expression ? be factored into rational factors?
Calculate the wavelength of the tone frequency 11 kHz if the sound travels at speeds of 343 m/s.
From the colors - red, blue, green, black and white, create all possible tricolors.
- HP - harmonic progression
Determine the 10th term of the harmonic progression 6,4,3,…
- What are
What are the four terms between 4 and 19?
- Tenth member
Calculate the tenth member of geometric sequence when given: a1=1/2 and q=2
- Five members
Write first 5 members geometric sequence and determine whether it is increasing or decreasing: a1 = 3 q = -2
- Scalar product
Calculate the scalar product of two vectors: (2.5) (-1, -4)
- Bits, bytes
Calculate how many different numbers can be encoded in 16-bit binary word?
In the non-transparent bags are red, white, yellow, blue tokens. We 3times pull one tokens and again returned it, write down all possibilities.
- Equation 23
Find value of unknown x in equation: x+3/x+1=5 (problem finding x)