แนวข้อสอบ ป.6 เข้า ม.1 # 1
|
$1-\frac{4}{5} = \frac{1}{5}$ $1+ \frac{3}{ \frac{1}{5}} = 16$ $1-\frac{2}{16} = 1- \frac{1}{8} = \frac{7}{8}$ $1+ \frac{1}{\frac{7}{8}} = 1 + \frac{8}{7} = \frac{15}{7}$ |
$(-1)^5 + (-1)^4 + (-1)^3 +(-1)^2 + (-1)^1 +(-1)^0 +(-1)^{-1}$ = $ (-1) + (1) + (-1) + (1) + (-1) +(1) + \frac{1}{-1} $ $ = -1$ |
= $(\frac{7}{8})(\frac{16}{21})(\frac{144}{120} \times \frac{4}{2}) = \frac{8}{5}$ ไม่มีใน choices ตอบ ไม่ตรงกับข้อใด |
$\frac{1}{ab} + \frac{1}{bc} + \frac{1}{ca} = \frac{a+b+c}{abc} = \frac{3+6+9}{3 \times 6 \times 9} = \frac{18}{3 \times 6 \times 9} = \frac{1}{9}$ |
= $(\frac{8}{64})(\frac{4(1+4+4)16}{4-1})$ =$(\frac{1}{8})(\frac{4 \times 9 \times 16 }{3})$ $ = 24$ |
$\frac{84}{49} = 1 + \frac{35}{49}$ $= 1 + \frac{1}{\frac{49}{35}}$ $= 1 + \frac{1}{1+ \frac{14}{35}}$ $= 1 + \frac{1}{1+ \frac{1}{\frac{35}{14}}}$ $\frac{35}{14} = 2 + \frac{x}{10}$ $x = 5$ $x^2 +1 = 5^2+1 = 26$ |
$(3\frac{1}{4} + 2\frac{3}{8} - \frac{31}{16})+(4\frac{1}{2} - \frac{5}{8})$ $\frac{52}{16} + \frac{38}{16} - \frac{31}{16} + \frac{72}{16} - \frac{10}{16} = \frac{121}{16} = 7.56$ ไม่มีใน choices |
หนึ่งปีธรรมดาแปลว่าอะไรครับ $365 \times 24 \times 60 \times 60 = 31,536,000 = 3.1536 \times 10^7$ |
$ = \frac{\frac{21}{2}+\frac{51}{4}-\frac{61}{4}}{\frac{15}{8} \times \frac{2}{3}}$ $ = \frac{8}{\frac{5}{4}} = \frac{32}{5} = 6\frac{2}{5}$ |
ก. $(1\oplus 2) \Theta 3 = (1+2)(2-3) = -3$ ข. $(1\oplus 3) \Theta 2 = (1+3)(3-2) = 4$ ค. $(2\oplus 1) \Theta 3 = (2+1)(1-3) = -6$ ง. $(2\oplus 3) \Theta 1 = (2+3)(3-1) = 10$ |
Thanks for solution.
|
เวลาที่แสดงทั้งหมด เป็นเวลาที่ประเทศไทย (GMT +7) ขณะนี้เป็นเวลา 18:57 |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Modified by Jetsada Karnpracha