Examples for secondary school students - page 16 of 212
Number of problems found: 4231
- Unknown number
I think number. If I subtract from the twelfth square the ninth square, I get a number 27 times greater than the intended number. What is this unknown number? - 6 terms
Find the first six terms of the sequence. a1 = 7, an = an-1 + 6 - AP - basics
Determine the first member and differentiate the following sequence: a3-a5=24 a4-2a5=61 - Seats
Seats in the sports hall are organized so that each subsequent row has five more seats. The First has ten seats. How many seats are: a) in the eighth row b) in the eighteenth row - PIN - codes
How many five-digit PIN - codes can we create using the even numbers? - Radians compare
What is the greater angle? -0.7 radians or -0.7π radians? - Fish tank
A fish tank at a pet store has 27 zebrafish. In how many different ways can George choose 2 zebra fish to buy? - Equation
Equation -2x²+bx -82 =0 has one root x1 = -8. Determine the coefficient b and the second root x2. - Medals
How many ways can gold, silver, and bronze medals be divided among 21 contestants? - Square
If we increase the side of the square, increase its area of 91%. What is the percentage we increase the side of the square? - Chebyshev formula
To estimate the number of primes less than x Chebyshev formula is used: Pi(x) = 1.11 (x)/(ln x). Estimate the number of primes less than 30300537. - Reciprocal
What is the reciprocal of the sum of the reciprocals of 7 and 6? - Permill
How many per mills is 978 from 84370? - Gauss
Help little C.F. Gauss sum all the integers from 1 to 400. - Bulbs
The probability that the bulb can operate 4000 hours is 0.3. What is the probability that exactly one of the eight bulbs can operate 4000 hours? - 2nd class variations
From how many elements can you create 5112 variations of the second class? - Quadratic equation
Solve a quadratic equation: 2x²+28x-550=0 - Parametric 82072
Convert the parametric expression of the straight line to a general equation. x=3-5t y=-4+10t - Difference 81696
Write the first 5 terms of the arithmetic sequence if the first term is a1=7 and the difference d= - 3 - Definition 81474
Determine the definition fields of functions: y=4/x (written as a fraction)
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