Math Problems
Problem 1:
Pat planned to place platio stone in a rectangular garden that has dimensions 15 m by 2m. If each patio stones measure 0.5 m by 0.5 m, how many stones are needed to cover the garden ?
A. 240
B. 180
C. 120
D. 60
Problem 2:
The prime numbers between 10 and 20 are added together to form the number Q. What is the largest prime divisor of Q?
A. 2
B. 3
C. 5
E. 7
Do you want to know the answer ?
Answer:
Problem 1: C. 120
Problem 2: C. 5
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February 23, 2010 | Filed Under Mathematics
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no: 1 betul betul betul betu lbetul …………………………….!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2 cara no:2 gimana???????????????????
no.2 gmna caranya…..???????????????
email dong caranya….
oh, klo q sih, menurutq y, artinya soal i2 kan ” bilangan2 prima di antara 10 dan 20 dijmlhkan semuanya hingga menghslkan bilangan Q, brp bil. prima terbesar pembagi Q?” Pertama, cari dulu smw bil.prima dr 10-20, yaitu : 11,13, 17, dan 19. Llu, djmlhkan semua bilangan itu hingga menghslkan bilangan Q yaitu 60. Nah, 60 itu faktor pembaginya yg prima cuma 3 dan 5. Jadi bil. prima terbsr pembagi Q = 5