brainstellar.com valuation and analysis
Robots.txt Information
| Robot | Path | Permission |
| GoogleBot | / | ✔ |
| BingBot | / | ✔ |
| BaiduSpider | / | ✔ |
| YandexBot | / | ✔ |
Meta Tags
| Title | Welcome | Brainstellar - Puzzles from Quant |
| Description | Select an Brainstellar - Puzzles From Quant interview: This is a placement preparation portal and a forum for discussing the most interesting puzzles asked by the top companies.Easy Puzzles, MEdium Puzzles, Hard Puzzles, Discrete maths, Probability Puzzles, |
| Keywords | N/A |
Server Information
| WebSite | |
| Host IP | 172.67.206.42 |
| Location | United States |
Related Websites
| Site | Rank |
More to Explore
brainstellar.com Valuation
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US$1,755,109
Last updated: 2022-06-24 19:17:21
brainstellar.com has Semrush global rank of 6,030,568. brainstellar.com has an estimated worth of US$ 1,755,109, based on its estimated Ads revenue. brainstellar.com receives approximately 202,513 unique visitors each day. Its web server is located in United States, with IP address 172.67.206.42. According to SiteAdvisor, brainstellar.com is safe to visit. |
Traffic & Worth Estimates
| Purchase/Sale Value | US$1,755,109 |
| Daily Ads Revenue | US$1,621 |
| Monthly Ads Revenue | US$48,604 |
| Yearly Ads Revenue | US$583,237 |
| Daily Unique Visitors | 13,501 |
| Note: All traffic and earnings values are estimates. | |
DNS Records
| Host | Type | TTL | Data |
| brainstellar.com. | A | 300 | IP: 172.67.206.42 |
| brainstellar.com. | A | 300 | IP: 104.21.93.65 |
| brainstellar.com. | AAAA | 300 | IPV6: 2606:4700:3036::6815:5d41 |
| brainstellar.com. | AAAA | 300 | IPV6: 2606:4700:3035::ac43:ce2a |
| brainstellar.com. | NS | 86400 | NS Record: mary.ns.cloudflare.com. |
| brainstellar.com. | NS | 86400 | NS Record: anuj.ns.cloudflare.com. |
| brainstellar.com. | MX | 300 | MX Record: 0 mail.brainstellar.com. |
| brainstellar.com. | TXT | 300 | TXT Record: v=spf1 a mx ptr include:secureserver.net ~all |
HtmlToTextCheckTime:2022-06-24 19:17:21
| Discrete Probability Strategy Tricks × Select an Album Easy Puzzles Medium Puzzles Hard Puzzles Discrete Maths Probability Puzzles Strategy Puzzles General Tricks Latest Puzzle Hard Color Switches Probability You are given an urn with 100 balls (50 black and 50 white). You pick balls from urn one by one without replacements until all the balls are out. A black followed by a white or a white followed by a black is "a colour change". Calculate the expected number of colour changes if the balls are being picked randomly from the urn. Hint Linearity of expectation Solution There are 99 positions. Let X_i be a random variable taking value 1 if i_th position has a colour change and zero otherwise. We have to find expected value of E[X_1 + X_2 + ... + X_99] Since all X_i are equivalent, the answer is 99*E[X_i] E[X_i] = ((50/100)*(50/99)+(50/100)*(50/99)) = 50/99 So, Answer is 50. Source: Placement test Enable Like and Comment Older Puzzle Latest solved Puzzles Color Switches Weird Sequences |
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brainstellar.com Whois Information
Domain Name: BRAINSTELLAR.COM Registry Domain ID: 1869495215_DOMAIN_COM-VRSN Registrar WHOIS Server: whois.google.com Registrar URL: http://domains.google.com Updated Date: 2021-08-03T20:02:42Z Creation Date: 2014-08-03T15:38:14Z Registry Expiry Date: 2022-08-03T15:38:14Z Registrar: Google LLC Registrar IANA ID: 895 Registrar Abuse Contact Email: registrar-abuse@google.com Registrar Abuse Contact Phone: +1.8772376466 Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Name Server: ANUJ.NS.CLOUDFLARE.COM Name Server: MARY.NS.CLOUDFLARE.COM DNSSEC: unsigned >>> Last update of whois database: 2021-09-13T03:24:42Z <<< |