1/1*2+1/2*3+1/3*4+1/4*5+.+1/24*25
1个回答
=(1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+……+(1/24-1/25)
=1-1/25
=24/25
相关问题
观察下列算式:1×3+1=4=2^2,24+1=9=3^3,3×5+1=16=4^2,4×6+1=25=5^2
1*3+1=4=2²2*4+1=9=3²3*5+1=16=4²4*6+1=25=5
(1)x/(1-1/5)=24(2)4/5/x=24(3)4/5x=24(4)1/2+1/4+1/8+1/10+1/32
(1.25+5/24-3/4)÷1/4
(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4) (2),(-0.5)-(3又1/4)+2.75-(
1】.5√1/5+3/2√20-15/4√1/5 2】.√12+6√3/2-【√(3-9/4)-√24】 3】.4√1/
1*2*3*4+1=24+1=5*5 2*3*4*5+1=120+1=11*11 3*4*5*6+1=360+1=19*
4/5+1.25= 4/5乘(1+1/4) 30除(1-1/6) 4除0.25 2/3除2/3
1*2*3*4+1=25=5^2,2*3*4*5+1=121=11^2,3*4*5*6+1=361=19^2
(1)-6-[3/25-(-4/5)^2]*(-5)^3 (2)-0.25除以(-1/2)^3+(1/8-1/2)*(-