Mathematics Challenge Wiskunde-uitdaging Umceli ... - AMESA

23. Which one of the following numbers will appear in
the sequence
2; 5; 10; 17; 26; 37; ...?
Grade 7 (Final Round) Page 7 of 7
23. Watter een van die volgende getalle sal voorkom in
die getalry
2; 5; 10; 17; 26; 37; ...?
23. Leliphi kula manani alandelayo elizakuvela kolu
luhlu
2; 5; 10; 17; 26; 37; ...?
None of these
(A) 901 (B) 902 (C) 903 (D) 904 (E) Nie een hiervan nie
Ayiko kwezi
24. A goldmine mines 5% of its total reserves per year.
on average. After about how many years will it have
extracted half of its reserves?
24. ’n Goudmyn ontgin gemiddeld 5% van sy totale
kapasiteit per jaar. Na omtrent hoeveel jaar sal die
helfte van die kapasiteit ontgin wees?
(A) 5 (B) 10 (C) 13 (D) 14 (E) 15
25. Study the pattern shown below. What is the product
of the numbers?
1 1 1 1
1
(1 + 1) × (1 +
2
) × (1 +
3
) × (1 +
4
) × (1 +
5
) × … × (1 +
100 )
(A) 99
100
101
(B)
100
25. Bestudeer die patroon hieronder. Wat is die produk
van die getalle?
1 1 1 1
1
(1 + 1) × (1 +
2
) × (1 +
3
) × (1 +
4
) × (1 +
5
) × … × (1 +
100 )
(C)
1
100
24. Umgodi wegolide uthi wembe umndilili (average)
5% wogcinelo lwawo lonyaka. Mingaphi iminyaka lo
mgodi owothi wombe isiqingatha sogcinelo lwawo?
25. Funda olu luhlu lubonisiweyo ngezantsi. Sithini
isiphumo sokuphindaphindwa kwala manani?
(D) 100 (E) 101
1 1 1 1
1
(1 + 1) × (1 +
2
) × (1 +
3
) × (1 +
4
) × (1 +
5
) × … × (1 +
100 )