serie aritmetica y notables
Quiz
•
Mathematics
•
University
•
Practice Problem
•
Hard
Razonamiento Perú
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
sume:
3+5+7+...(10sum)
121
120
111
130
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
10. Calcule el valor de “x” en:
1 + 3 + 5 + 7 +…+ x = 900
39
30
61
59
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Halle el valor de “E”
E= 2(2) + 4(3) + 6(4) + ….. + 40(21)
6210
6160
16669
7669
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Adolfo hace abdominales todos los dias, el primer dia 10, el segundo 12 , el tercer dia 14; y asi sucesivamente; hasta que cierto dia hizo 40 abdominales. Cuantas hizo en total?
100
200
400
350
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La suma de 20 enteros consecutivos es “S” . ¿Cuál es la suma de los 20 siguientes?
s+500
s+400
s+900
400 +2s
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La series aritmeticas se suman mediante la siguiente formula:
(p+u)n/3
(p+u)n/r
(p+u)n/2
(p-u)n/2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Con 1240 esferas idénticas se forma una pirámide de base cuadrada. ¿Cuántas esferas tiene por lado la base de la pirámide?
14
16
125
15
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