Examples for secondary school students
Number of problems found: 2186
- Two equations
Solve equations (use adding and subtracting of linear equations): -4x+11y=5 6x-11y=-5
How many elements can form six times more combinations fourth class than combination of the second class?
- Q of GP
Calculate quotient of geometric progression if a1=5 a a1+a2=12.
If probabilities of A, B and A ∩ B are P (A) = 0.62 P (B) = 0.78 and P (A ∩ B) = 0.26 calculate the following probability (of union. intersect and opposite and its combinations):
In what quadrant is a -1165° angle?
- 2nd class combinations
From how many elements you can create 4560 combinations of the second class?
In the Hockey World Cup play eight teams, determine how many ways can they win gold, silver and bronze medals.
In a braking test, a vehicle that travels at 51 km/h stops in 5 s. What is the acceleration?
I borrow 25,000 to 6.9% p.a.. I pay 500 per month. How much will I pay and for how long?
- AP 6
Calculate the first five items of an arithmetic sequence if it is given: a2 – a3 + a5 = 20 a1 + a6 = 38
How many different ways can initiate a game of chess (first pass)?
- AVG of INT
What is the average of the integers from 9 throuht 52 inclusive?
- Insert 6
Insert four harmonic means between 3/7 and 3/19
- Cancel fractions
Compress the expression of factorial: (n+6)!/(n+4)!-n!/(n-2)!
- Exponential equation
Solve for x: (4^x):0,5=2/64.
Solve two equations with two unknowns: 400x+120y=147.2 350x+200y=144
- The dice
What is the probability of events that if we throw a dice is rolled less than 6?
The product of two consecutive odd numbers is 8463. What are this numbers?
- Election 4
In a certain election there are 3 candidates for president 5 for secretory and 2 for tresurer. Find how many ways the election may (turn out/held).
In the non-transparent bags are red, white, yellow, blue tokens. We 3times pull one tokens and again returned it, write down all possibilities.